Doom
"The Ultimate Doom" title artwork, painted by Don Ivan Punchatz, depicts the lone hero, a space marine, fighting demonic creatures.
Developer(s)	id Software
Publisher(s)	id Software, GT Interactive (Windows, Mac), Activision (GBA, XBLA), Atari (Jaguar), Sega (Genesis 32X/Megadrive 32X, Saturn), Virgin Interactive Entertainment Ltd. (Playstation, Linux) Activision Blizzard/Valve Corporation (Steam)
Designer(s)	John Romero Sandy Petersen Tom Hall
Engine	Doom
Version	1. A video game developer is a software developer (a business or an individual that creates Video games A developer may specialize in a certain video id Software (ɪd officially is an American computer game developer based in Mesquite, Texas, a suburb of Dallas. id Software (ɪd officially is an American computer game developer based in Mesquite, Texas, a suburb of Dallas. GT Interactive Software Corporation ( Good Times In 2003 Infogrames Inc Activision Inc is an American Video game developer and publisher. Atari is a corporate and brand name owned by several entities since its inception in 1972. is a multinational Video game Software and Hardware development company and a former Home computer Virgin Interactive was a successful and influential British Video game publisher. Activision Blizzard Inc ( is a Franco - American Video game developer and publisher, partially owned by Conglomerate Vivendi Valve Corporation is an American video game development company based in Bellevue Washington, USA that was founded in 1996, and made famous A "game designer" is a person who designs Video games or one who designs traditional games such as Board games Video Games Designer A video game designer Alfonso John Romero (born October 28 1967 in Colorado Springs, Colorado) is a Game designer, programmer, and Carl Sanford Joslyn Petersen (born September 16, 1955) is a Game designer. Tom A Hall (born September 2, 1964) is a Game designer born in Wisconsin. A game engine is a software system designed for the creation and development of computer and video games Doom Engine, also called id Tech 1, is the Game engine that powers the Id Software games Doom and Doom II 9
Platform(s)	PC (MS-DOS) Other versions and ports of Doom
Release date	December 10, 1993
Genre(s)	Shooter First-person shooter Scientific Fiction
Mode(s)	Single player Multiplayer
Rating(s)	ESRB: M ESRB: T (GBA) BBFC: 15 OFLC: MA15+ PEGI: 16+ USK: 18
Media	3½" floppy disk, CD (1)
System requirements	80386 class CPU, 4 MB RAM

Doom (or DOOM as a brand in the game materials and press releases^[1]) is a 1993 computer game by id Software that is a landmark title in the first-person shooter genre, and in first person gaming in general. In Computing, a platform describes some sort of Hardware architecture or Software framework (including Application frameworks, that allows IBM PC compatible computers are those generally similar to the original IBM PC, XT, and AT. MS-DOS (short for M icro' s' oft D isk O perating S ystem is an Operating system commercialized by Microsoft. Doom is one of the most widely ported Computer games in the First-person shooter genre starting with the original MS-DOS version (released Events 1041 - Empress Zoe of Byzantium elevates her adoptive son to the throne of the Eastern Roman Empire as Michael V Year 1993 ( MCMXCIII) was a Common year starting on Friday (link will display full 1993 Gregorian calendar) See also [[Game classification]] Video games are categorized into Genres based on their Gameplay interaction A first-person shooter ( FPS) is an action Video game from the Shooter game The initial development of Maze War In video gaming, single-player refers to the variant of a particular game where input from only one player is expected throughout the course of the gaming session A multiplayer video game is one which more than one person can play in the same game environment at the same time A video game content rating system is a system used for the classification of Video games into suitability-related groups The Entertainment Software Rating Board ( ESRB) is a self-regulatory organization that applies and enforces ratings, Advertising guidelines and The Entertainment Software Rating Board ( ESRB) is a self-regulatory organization that applies and enforces ratings, Advertising guidelines and The Game Boy Advance (often shortened to GBA) is a 32-bit handheld video game console developed manufactured and marketed by Nintendo. The British Board of Film Classification ( BBFC) originally British Board of Film Censors, is the organisation responsible for Film, DVD The Office of Film and Literature Classification is a Statutory Censorship and classification body which provides day to day administrative support for the Classification Pan European Game Information ( PEGI) is a European Video game content rating system. USK redirects here For the Usinsk airport see Usinsk Airport. Digital media (as opposed to analog media) usually refers to Electronic media that work on digital Codes. A floppy disk is an increasingly Obsolete data storage medium that is composed of a disk of thin flexible ("floppy" Magnetic storage medium encased A Compact Disc (also known as a CD) is an Optical disc used to store digital data, originally developed for storing digital audio A brand is a collection of Images and ideas representing an economic producer more specifically it refers to the descriptive verbal attributes and concrete symbols such as a Events March &mdash In Sweden, the Swedish Video game Magazine Super PLAY (SP starts A personal computer Game (also known as a computer game or simply PC game) is a Video game played on a Personal computer, rather id Software (ɪd officially is an American computer game developer based in Mesquite, Texas, a suburb of Dallas. A first-person shooter ( FPS) is an action Video game from the Shooter game The initial development of Maze War In video games first person refers to a graphical perspective rendered from the viewpoint of the player character It is widely recognized for pioneering immersive 3D graphics, networked multiplayer gaming on the PC platform, and support for custom expansions (WADs). 3D computer graphics (in contrast to 2D computer graphics) are graphics that use a three-dimensional representation of geometric data that is stored in the computer A multiplayer game is a Game which is played by several players. Doom WADs are package files for the computer game Doom or its sequel Doom II, that contain sprites levels and game data Distributed as shareware, Doom was downloaded by an estimated 10 million people within two years, popularizing the mode of gameplay and spawning a gaming subculture; as a sign of its effect on the industry, games from the mid-1990s boom of first-person shooters are often known simply as "Doom clones". The term shareware, popularized by Bob Wallace, refers to Copyrighted commercial Software that is Distributed without payment on a trial To download is to receive data from a remote or central system such as a Webserver, FTP server, mail server or other similar systems For the term in biology see Subculture (biology. For the song by New Order see Sub-culture (song. Doom clone is a term used to refer to a Computer game with similar Gameplay as the 1993 First-person shooter Doom. Its graphic and interactive violence^[2] has also made Doom the subject of much controversy reaching outside the gaming world. Violence is the exertion of force so as to injure or abuse The word is used broadly to describe the destructive action of natural phenomena like Storms and Earthquakes Similar to other forms of media Video games have been the subject of debate and Censorship. According to GameSpy, Doom was voted by industry insiders to be the greatest game of all time in 2004. GameSpy, also known as GameSpy Industries, is a division of IGN Entertainment, which operates a network of game websites and provides online video game-related ^[3]

The Doom franchise was continued with Doom II: Hell on Earth (1994) and numerous expansion packs, including The Ultimate Doom (1995), Master Levels for Doom II (1995), and Final Doom (1996). Doom II Hell on Earth is a First-person shooter Video game created by Id Software. Events 1994 &mdash Nintendo calls this year "1994 The Year of the Cartridge" An expansion pack, expansion set, or supplement is an addition to an existing Role-playing game, Tabletop game or Video game. Doom is one of the most widely ported Computer games in the First-person shooter genre starting with the original MS-DOS version (released Events May 11 – Introduction of trade magazine GameWeek (then called Video Game Advisor May 11 - 16 &mdash The 1st annual Final Doom is a First-person shooter Computer game that uses the game engine items and characters from Doom II. Notable releases January 29 &mdash Duke Nukem 3D, successor to the simple side-scrolling originals and a genre-redefining title for Originally released for PC/DOS, these games have later been ported to many other platforms, including nine different game consoles, and even PDAs. IBM PC compatible computers are those generally similar to the original IBM PC, XT, and AT. MS-DOS (short for M icro' s' oft D isk O perating S ystem is an Operating system commercialized by Microsoft. See also Software portability In Computer science, porting is the process of adapting software so that an executable program can be created The series lost mainstream appeal as the technology of the Doom game engine was surpassed in the mid-1990s, although fans have continued making WADs, speedruns, and modifications to the source code released in 1997. Doom Engine, also called id Tech 1, is the Game engine that powers the Id Software games Doom and Doom II Doom WADs are package files for the computer game Doom or its sequel Doom II, that contain sprites levels and game data A speedrun ( IPA: /ˈspiːdˌɹʌn/ is a play-through or recording thereof of a computer- or Video game performed with the intent of completing it as In Computer science, source code (commonly just source or code) is any sequence of statements or declarations written in some Human-readable The franchise again received popular attention in 2004 with the release of Doom 3, a retelling of the original game using new technology, and an associated 2005 Doom motion picture. Events January 20 — Wired s Vaporware Awards gives its first "Lifetime Achievement Award" to recurring winner Doom 3 is a Science fiction Survival horror Video game developed by Id Software and published by Activision. The year 2005 in film involved some significant events Releases of sequels took place with movies like The Devil's Rejects, Cheaper Doom is a 2005 Science fiction Horror film adaptation of the popular Doom series of Video games created by

Game features

Story

Doom has a science fiction/horror theme, and a simple plot. Horror fiction is broadly Fiction in any medium intended to scare unsettle or horrify the audience Mythos (Aristotle In literature the plot comprises all the events in a story particularly rendered towards the achievement of some particular Artistic or Emotional The background is only given in the game's manual, and the in-game story is mainly advanced with short messages displayed between the game's episodes.

The player takes the role of a nameless space marine (referred to as "Doomguy" or "The Doomguy" by many fans), "one of Earth's toughest, hardened in combat and trained for action", who has been deported to Mars for assaulting a senior officer when ordered to kill unarmed civilians. For the Warhammer 40000 army see Adeptus Astartes Space marines are Fictional Soldiers that operate in Outer space. The Doomguy, also known as Doom or The Marine, is the protagonist of the Doom series of computer and video games created by Id Software He is forced to work for the Union Aerospace Corporation (UAC), a military-industrial conglomerate that is performing secret experiments with teleportation between the moons of Mars, Phobos and Deimos. The Union Aerospace Corporation ( UAC) is a fictional conglomerate focused on military-industrial research in id Software's science Teleportation is the movement of objects from one place to another more or less instantaneously either by Paranormal means or through technological artifice TemplateInfobox Planet.--> Deimos (ˈdaɪməs; also /ˈdiːməs/ The Marine may have been forced into a security or unimportant staff position according to the manual, stating "with no action for fifty million miles, your day consisted of suckin' dust and watchin' restricted flicks in the rec room. " Suddenly, something goes wrong and creatures from Hell come out of the teleportation gates, or "Gateways". Hell, according to many Religious beliefs, is a location in the Afterlife, which may be described as a place of suffering A defensive response from base security fails to halt the invasion, and the bases quickly get overrun by demons; all personnel are killed or turned into zombies. zombie is a reanimated human corpse Stories of zombies originated in the Afro-Caribbean spiritual belief system of Vodou, which told of the people being controlled At the same time, Deimos vanishes entirely. A UAC team from Mars is sent to Phobos to investigate the incident, but soon radio contact ceases and only one human is left alive — the player, whose task is to make it out as such. Radio is the transmission of signals by Modulation of electromagnetic waves with frequencies below those of visible Light. ^[4]

In order to complete the game, the player must fight through three episodes containing nine levels each (see Episodes and levels of Doom). Knee-Deep in the Dead, the first episode and the only one in the shareware version, is set in the high-tech military bases on Phobos. The term shareware, popularized by Bob Wallace, refers to Copyrighted commercial Software that is Distributed without payment on a trial It ends with the player fighting the Barons of Hell and afterwards entering the teleporter leading to Deimos, ending with the player getting overwhelmed by monsters and seemingly killed. In the second episode, Shores of Hell, the player journeys through the Deimos installation, whose areas are interwoven with beastly architecture, warped and distorted by the demonic invasion. After encountering the Cyberdemon, he discovers the truth about the vanished moon: it is floating above Hell. The player climbs down to the surface, and the final episode, Inferno, begins. After the final boss, the Spider Mastermind, is destroyed, a hidden doorway opens for the hero who has "proven too tough for Hell to contain", leading back home to Earth. A boss is a computer-controlled opponent which is found in Video games Their purpose is to test the skills that the player has accumulated over the course of a game The expansion pack Ultimate Doom adds a fourth episode, Thy Flesh Consumed, chronicling the marine's return to Earth, in other words his adventures between the first three original episodes of Doom and Doom II. Doom II Hell on Earth is a First-person shooter Video game created by Id Software.

Gameplay

Episode I: Knee-Deep in the Dead takes place in the military base on Phobos. Etymology The word bases is first recorded in English language from c In this image the main character is currently using the chainsaw, a powerful melee-only weapon. A chainsaw (or chain saw) is a portable mechanical motorized Saw. Melee (from the French mêlée meˈleː generally refers to disorganized Close combat involving a group of fighters Pools of toxic waste are visible on both sides, and a zombified human approaches. Toxic waste is waste material often in chemical form that can cause death or injury to living creatures zombie is a reanimated human corpse Stories of zombies originated in the Afro-Caribbean spiritual belief system of Vodou, which told of the people being controlled

Being a first-person shooter, Doom is experienced through the eyes of the main character. A first-person shooter ( FPS) is an action Video game from the Shooter game The initial development of Maze War The objective of each level is simply to locate the exit room that leads to the next area (usually labeled with an inviting red EXIT sign or a special kind of door), while surviving all hazards on the way. Among the obstacles are monsters, pits of radioactive slime, ceilings that come down and crush the player, and locked doors for which a keycard, Skeleton key, or remote switch needs to be located. Radioactive wastes are Waste types containing radioactive Chemical elements that do not have a practical purpose This article is about the method of execution See Crusher for a description of the manufacturing process and mechanisms for it A key is a device which is used to open a lock. A typical key consist of two parts the blade, which slides into the Keyway of the lock and distinguishes The levels are sometimes labyrinthine (the automap can be used as an aid for navigation) and feature plenty of hidden secret areas that hold power-ups as a reward for players who explore. In Video games an automap is a navigational aid used mainly for Virtual worlds that are expansive or maze-like In computer and video games, power-ups are objects that instantly benefit or add extra abilities to the game character

Doom is notable for the weapons arsenal available to the player, which became prototypical for first-person shooters. A weapon is a Tool used either in Hunting, or attack or defence in Combat for the purpose of subduing enemy personnel or to destroy enemy weapons The player starts armed only with a pistol, and brass-knuckled fists in case the ammunition runs out, but larger weapons can be picked up: these are a chainsaw, a shotgun, a chaingun, a rocket launcher, a plasma rifle, and finally the immensely powerful BFG 9000. Brass knuckles, also sometimes called knuckles, knucks, brass knucks, B-Nux or knuckle dusters, are Weapons used in Ammunition, often referred to as ammo, is a generic term derived from the French language la munition which A chainsaw (or chain saw) is a portable mechanical motorized Saw. A shotgun (also known as a scattergun) is a Firearm that is usually designed to be fired from the shoulder which uses the energy of a fixed shell to fire a number The minigun is a multi-barrel Machine gun with a high rate of fire (several thousand Rounds per minute) employing Gatling -style rotating barrels and an A shoulder-launched missile weapon is a Weapon that fires a Projectile at a target, yet is small enough to be carried by a single person and fired while Plasma rifles are theoretical weapons often used in Science fiction. There is a wide array of power-ups, such as a backpack that increases the player's ammunition-carrying capacity, armor, first aid kits to restore health, the berserk pack (a black first aid box that puts the character into berserk mode, allowing them to deal out rocket launcher-level damage with their fists and potentially splattering former humans and imps), and supernatural blue orbs (called Soul Spheres) that boost the player's health percentage beyond 100%, up to a maximum of 200%. A backpack (also called Armour (or armor) is protective covering most commonly manufactured from metals to prevent damage from being inflicted to an individual or a vehicle through use of direct contact Berserkers (or Berserks) were Norse Warriors who wore coats of wolf or bear skin and who were commonly understood to have fought in an uncontrollable

Episode III: Inferno is set in Hell. Hell, according to many Religious beliefs, is a location in the Afterlife, which may be described as a place of suffering The main character has just fired the shotgun at a group of Imps and is cycling it. A shotgun (also known as a scattergun) is a Firearm that is usually designed to be fired from the shoulder which uses the energy of a fixed shell to fire a number He is injured and has only seven shells left.

The enemy monsters in Doom make up the central gameplay element. The player faces them in large numbers, on the higher of the game's five difficulty levels often encountering a dozen or more in the same room. In general usage difficulty level refers to the relative difficulty of completing a task or objective There are 10 types of monsters (Doom II doubles this figure), including possessed humans as well as demons of different strength, ranging from weak but ubiquitous imps and red, floating cacodemons, to the bosses which survive multiple strikes even from the player's strongest weapons. Doom II Hell on Earth is a First-person shooter Video game created by Id Software. An imp is a mythological being similar to a Fairy or Demon, frequently described in Folklore and Superstition. A cacodemon (or cacodaemon) is an evil spirit or (in the modern sense of the word a Demon. A boss is a computer-controlled opponent which is found in Video games Their purpose is to test the skills that the player has accumulated over the course of a game The monsters have very simple behavior, consisting of either walking toward the player or attacking by throwing fireballs, biting, and scratching (though they can also fight each other). Monster infighting is a term popularized by the FPS games in the Doom series and other similar games released in the 1990s

Many versions of Doom (and its sequels) include secret levels which are accessed by the player discovering alternate exits, often hidden behind secret doors or in difficult-to-reach areas. In some versions of Doom II two of these secret levels incorporate level design and characters from Doom's precursor, Wolfenstein 3D.

Aside from the single-player game mode, Doom features two multiplayer modes playable over a network: "co-operative", in which two to four players team up against the legions of Hell, and "deathmatch", in which two to four players fight each other. In video gaming, single-player refers to the variant of a particular game where input from only one player is expected throughout the course of the gaming session A multiplayer video game is one which more than one person can play in the same game environment at the same time Cooperative gameplay (often abbreviated as co-op) primarily refers to a feature in Video games that allows players to work together as teammates with the absence of Deathmatch (abbreviated DM) is a widely-used gameplay mode integrated into many Shooter and Real-time strategy (RTS Computer games The goal

Development

Main article: Making of Doom

Some of the Doom monsters were digitized from sculptures. The making of Doom, Id Software 's Computer game released on December 10, 1993, began in late 1992. Here, Adrian Carmack creates the Baron of Hell in clay. Adrian Carmack (born on May 5, 1969) is one of the four founders of Id Software, along with Tom Hall, John Romero, and John D

The development of Doom started in 1992 when John D. Carmack developed a new 3-D game engine, the Doom engine, while the rest of the id Software team finished the Wolfenstein 3D prequel, Spear of Destiny. John D Carmack II (born August 20 1970) is an American Game programmer, and the co-founder of Id Software. A game engine is a software system designed for the creation and development of computer and video games Doom Engine, also called id Tech 1, is the Game engine that powers the Id Software games Doom and Doom II A prequel is a work that portrays events and/or aspects of a previously completed narrative but is set prior to the existing narrative Spear of Destiny, often also called Spear, Wolfenstein Spear of Destiny or just SoD, is a 1992 When the game design phase began in late 1992, the main thematic influences were the science fiction action movie Aliens and the horror movie Evil Dead II. Game design is the process of designing the content and rules of a Game. Action movies are a Film genre where action sequences such as fights, Shootouts Stunts Car chases or explosions either take precedence This article is about the film for the video games see Aliens (Square computer game and Aliens (arcade game. Horror films are Movies that strive to elicit Fear, Horror and terror responses from viewers Evil Dead II (also known as Evil Dead 2 Dead by Dawn) is an American Comedy horror movie released in 1987 The title of the game was picked by Carmack:

There is a scene in The Color of Money where Tom Cruse^[sic] shows up at a pool hall with a custom pool cue in a case. This article is about both the book and the film of the same name The Color of Money is a 1984 novel by American writer Thomas Cruise Mapother IV ( born July 3 1962 better known by his screen name Tom Cruise, is an American Actor and Film producer Sic is a Latin word meaning "thus" "so" "as such" or "just as that" "What do you have in there?" asks someone. "Doom. " replied Cruse with a cocky grin. That, and the resulting carnage, was how I viewed us springing the game on the industry.

– ^[5]

Designer Tom Hall wrote an elaborate design document called the Doom Bible, according to which the game would feature a detailed storyline, multiple player characters, and a number of interactive features. Tom A Hall (born September 2, 1964) is a Game designer born in Wisconsin. ^[6] However, many of his ideas were discarded during development in favor of simpler design primarily advocated by Carmack, resulting in Hall in the end being forced to resign due to not contributing effectively in the direction the rest of the team was going. Most of the level design that ended up in the final game is that of John Romero and Sandy Petersen. Level design or game mapping is the creation of levels mdashlocales stages or missions&mdashfor a Video game (such as a Console game or Alfonso John Romero (born October 28 1967 in Colorado Springs, Colorado) is a Game designer, programmer, and Carl Sanford Joslyn Petersen (born September 16, 1955) is a Game designer. The graphics, by Adrian Carmack, Kevin Cloud and Gregor Punchatz, were created in various ways: although much was drawn or painted, several of the monsters were built from sculptures in clay or latex, and some of the weapons are toy guns from Toys "R" Us. Adrian Carmack (born on May 5, 1969) is one of the four founders of Id Software, along with Tom Hall, John Romero, and John D Kevin Cloud is a Computer games Graphic designer. He was hired in 1992 by Id Software to work as an assistant artist to the then lead artist Gregor Punchatz (born 1967 is an artist hired by Id Software to create sculptures for the Arch-Vile Mancubus Revenant and Spider Mastermind monsters for the Doom Clay is a naturally occurring material composed primarily of fine-grained Minerals which show plasticity through a variable range of Water content, and LaTeX (ˈleɪtɛ Toys "R" Us ( currently typeset as Toys Я Us in the logo and before as Toys "Я" Us) is a Toy store chain based A heavy metal-ambient soundtrack was supplied by Bobby Prince. Ambient music is a Musical genre in which sound is more important than notes Robert Prince, also known as Bobby Prince, is a Composer and sound designer ^[7]

Engine technology

Main article: Doom engine

Doom's primary distinguishing feature at the time of its release was its realistic 3D graphics, then unparalleled by other real-time-rendered games running on consumer-level hardware. Doom Engine, also called id Tech 1, is the Game engine that powers the Id Software games Doom and Doom II 3D computer graphics (in contrast to 2D computer graphics) are graphics that use a three-dimensional representation of geometric data that is stored in the computer In Computer science, real-time computing (RTC is the study of hardware and software systems that are subject to a "real-time constraint"—i The advance from id Software's previous game Wolfenstein 3D was enabled by several new features in the Doom engine:

Doom relies heavily on contrasts of lighting in building its atmosphere.

• Height differences (all rooms in Wolfenstein 3D have the same height);
• Non-perpendicular walls (all walls in Wolfenstein 3D run along a rectangular grid);
• Swaying of the weapon (in Wolfenstein 3D the arms stay fixed in front in the screen no matter what the character does), this gives the impression of fluidity while walking or running;
• Full texture mapping of all surfaces (in Wolfenstein 3D, floors and ceilings are not texture mapped);
• Varying light levels (all areas in Wolfenstein 3D are fully lit at the same brightness). In Geometry, two lines or planes (or a line and a plane are considered perpendicular (or orthogonal) to each other if they form congruent Texture mapping is a method for adding detail surface texture or colour to a computer-generated graphic or 3D model. While contributing to the game's visual authenticity by allowing effects such as highlights and shadows, this perhaps most importantly added to the game's atmosphere and even gameplay; the use of darkness as a means of frightening or confusing the player was an unseen element in games released prior to Doom.

In contrast to the static levels of Wolfenstein 3D, those in Doom are highly interactive: platforms can lower and rise, floors can rise sequentially to form staircases, and bridges can rise and descend. The life-like feeling of the environment was enhanced further by the stereo sound system, which made it possible to roughly tell the direction and distance of a sound's origin. Stereophonic sound, commonly called stereo, is the reproduction of Sound, using two or more independent audio channels through a Symmetrical The player is kept on guard by the grunts and growls of monsters, and receives occasional clues to finding secret areas in the form of sounds of hidden doors opening remotely. Monsters can also become aware of the player's presence by hearing distant gunshots.

Carmack had to make use of several tricks for these features to run smoothly on home computers of 1993. Most significantly, Doom levels are not truly three-dimensional; they are internally represented on a plane, with height differences added separately (a similar trick is still used by many games to create huge outdoor environments). This gives the appearance of a two point perspective projection, and leads to several limitations: it is, for example, not possible for a Doom level to have one room over another. This two-dimensional representation does, however, have the benefit that rendering can be done very quickly, using a binary space partitioning method. Binary space partitioning ( BSP) is a method for recursively subdividing a space into Convex sets by Hyperplanes This subdivision gives rise to Another benefit was the clarity of the automap because it could be displayed with 2D vectors without the risk of overlapping.

Another important feature of the Doom engine is a modular approach that allows the game content to be replaced by loading custom WAD files. Doom WADs are package files for the computer game Doom or its sequel Doom II, that contain sprites levels and game data Wolfenstein 3D was not designed to be expandable, but fans had nevertheless figured out how to create their own levels for it, and Doom was designed to take the phenomenon further. The ability to create custom scenarios contributed significantly to the game's popularity (see the section on WADs below).

Release and later history

Initial popularity

The development of Doom was surrounded by much anticipation. The large number of posts in Internet newsgroups about Doom led to the SPISPOPD^[8] joke, to which a nod was given in the game in the form of a cheat code. A newsgroup is a Repository usually within the Usenet system for messages posted from many users in different locations A Cheat code (also called debug code or backdoor) is a code that can be entered into a computer program to alter the run-time behavior or configuration of that program In addition to news, rumors, and screenshots, unauthorized leaked alpha versions also circulated online. A screenshot, screen capture, or screen dump is an Image taken by the Computer to record the visible items displayed on the monitor A software release is the distribution whether public or private of an initial or new and upgraded version of a Computer software product (Many years later these alpha versions were sanctioned by id Software because of historical interest; they reveal how the game progressed from its early design stages. ^[9]) The first public version of Doom was uploaded to Software Creations BBS and a FTP server at the University of Wisconsin-Madison on December 10, 1993. Software Creations was a division of Linton Enterprises located in Clinton Massachusetts, and run by Dan Linton Events 1041 - Empress Zoe of Byzantium elevates her adoptive son to the throne of the Eastern Roman Empire as Michael V Year 1993 ( MCMXCIII) was a Common year starting on Friday (link will display full 1993 Gregorian calendar)

Doom was released as shareware, with people encouraged to distribute it further. The term shareware, popularized by Bob Wallace, refers to Copyrighted commercial Software that is Distributed without payment on a trial They did so: in 1995, Doom was estimated to have been installed on more than 10 million computers. Although most users did not purchase the registered version, over one million copies have been sold, and the popularity helped the sales of later games in the Doom series which were not released as shareware. In 1995, The Ultimate Doom (version 1. 9, including episode IV) was released, making this the first time that Doom was sold commercially in stores.

Recognizing the game's popularity, Bill Gates made a video presentation to promote Windows 95 while digitally superimposed into Doom to blast zombies. If you would like to experiment with Wikipedia please copy Windows 95 is a consumer-oriented Graphical user interface -based Operating system.

In a press release dated January 1, 1993, id Software had written that they expected Doom to be "the number one cause of decreased productivity in businesses around the world". New Year See also New Year The Ancient Romans began their consular year on January 1st since 153 BC Year 1993 ( MCMXCIII) was a Common year starting on Friday (link will display full 1993 Gregorian calendar) This prediction came true at least in part: Doom became a major problem at workplaces, both occupying the time of employees and clogging computer networks with traffic caused by deathmatches. A computer network is a group of interconnected Computers. Networks may be classified according to a wide variety of characteristics Intel, Lotus Development and Carnegie Mellon University are among many organizations reported to form policies specifically disallowing Doom-playing during work hours. Lotus Software (called Lotus Development Corporation before its acquisition by IBM) is a Software company with headquarters in Westford, Carnegie Mellon University (also known as CMU) is a private Research University in Pittsburgh, Pennsylvania, United At the Microsoft campus, Doom was by one account^[7] equal to a "religious phenomenon". Microsoft Corporation is an American multinational Computer technology Corporation, which rose to dominate the Home computer

In late 1995, Doom was estimated to be installed on more computers worldwide than Microsoft's new operating system Windows 95, despite million-dollar advertising campaigns for the latter. Windows 95 is a consumer-oriented Graphical user interface -based Operating system. The game's popularity prompted Bill Gates to briefly consider buying id Software, and led Microsoft to develop a Windows 95 port of Doom to promote the operating system as a gaming platform. If you would like to experiment with Wikipedia please copy One such presentation to promote Windows 95 had Bill Gates digitally superimposed into the game. ^[10] The Microsoft 1995 release Excel 95 included a Doom-esque secret level as an easter egg containing portraits of the programmers among other things. A virtual Easter egg is an intentional Hidden message or feature in an object such as a movie, Book It is speculated that Microsoft engineers took advantage of their experience working on the Doom Windows 95 port to place the code in the spreadsheet program. ^[11]

Doom was also widely praised in the gaming press. In 1994, it was awarded Game of the Year by both PC Gamer and Computer Gaming World. Game of the Year (abbreviated GotY or GOTY) is a distinction awarded by various Magazines and Websites to a deserving PC or console PC Gamer is a magazine founded in Britain in 1993 devoted to PC gaming and published monthly by Future Publishing. Computer Gaming World ( CGW) was founded in 1981 by Russell Sipe as a bimonthly publication It also received the Award for Technical Excellence from PC Magazine, and the Best Action Adventure Game award by the Academy of Interactive Arts & Sciences. PC Magazine (sometimes referred to as PC Mag) is a Computer magazine that is published monthly in the United States (until 2008 it was published The Academy of Interactive Arts & Sciences ( AIAS) founded in 1996, is a non-profit organization that promotes Computer and video

In addition to the thrilling nature of the single-player game, the deathmatch mode was an important factor in the game's popularity. Deathmatch (abbreviated DM) is a widely-used gameplay mode integrated into many Shooter and Real-time strategy (RTS Computer games The goal Doom was not the first first-person shooter with a deathmatch mode—MIDI Maze on the Atari ST had one in 1987, using the MIDI ports built into the ST to network up to four machines together. MIDI Maze was an early First person shooter Video game for the Atari ST developed by Xanth Software F/X, published by The Atari ST is a home / Personal computer that was commercially available from 1985 to the early 1990s MIDI ( Musical Instrument Digital Interface, ˈmɪdi is an industry-standard protocol that enables Electronic musical instruments Computers However, Doom was the first game to allow deathmatching over ethernet, and the combination of violence and gore with fighting friends made deathmatching in Doom particularly attractive. Ethernet is a family of frame -based Computer networking technologies for Local area networks (LANs Two-player multiplayer was also possible over a phone line by using a modem, or by linking two PCs with a null-modem cable. Modem (from mo dulator- dem odulator is a device that modulates an analog carrier signal to encode Digital information Due to its widespread distribution, Doom hence became the game that introduced deathmatching to a large audience (and was also the first game to use the term "deathmatch").

WADs

Main article: Doom WAD

Ghostbusters is one of many movies that have been made into Doom WADs. Doom WADs are package files for the computer game Doom or its sequel Doom II, that contain sprites levels and game data Zuul redirects here For the videogame see Zool. Ghostbusters (titled on-screen as Ghost Busters) is

The ability to create custom levels and otherwise modify the game, in the form of custom WAD files, turned out to be a particularly popular aspect of Doom. Doom WADs are package files for the computer game Doom or its sequel Doom II, that contain sprites levels and game data Gaining the first large mod-making community, Doom affected the culture surrounding first-person shooters, and also the industry. Mod or modification is a term generally applied to Computer games especially First-person shooters RPGs and Real-time strategy games Several to-be professional game designers started their careers making Doom WADs as a hobby, among them Tim Willits, who later became the lead designer at id Software. A "game designer" is a person who designs Video games or one who designs traditional games such as Board games Video Games Designer A video game designer Tim Willits is the lead designer and co-owner of Video game developer Id Software.

The first level editors appeared in early 1994, and additional tools have been created that allow most aspects of the game to be edited. A level editor (also known as a map, campaign or scenario editor is a software application used to design levels maps or campaigns Although the majority of WADs contain one or several custom levels mostly in the style of the original game, others implement new monsters and other resources, and heavily alter the gameplay; several popular movies, television series, other video games and other brands from popular culture have been turned into Doom WADs by fans (without authorization), including Aliens, Star Wars, The X-files, The Simpsons, South Park, Sailor Moon, Dragon Ball Z, Red Faction, Pokémon , and Batman. This article is about the film for the video games see Aliens (Square computer game and Aliens (arcade game. Star Wars is an epic Space opera franchise initially conceived by George Lucas during the 1970s and significantly expanded The X-Files is a Peabody, Golden Globe and Emmy Award -winning American Science fiction television series created by Chris Carter South Park is an animated American television comedy series created and written by Trey Parker and Matt Stone for Comedy Central is the title of a Japanese Media franchise created by Naoko Takeuchi. For the video game franchise by Volition see Red Faction (series Red Faction is a First-person shooter If you came here to express your personal opinion about Pokémon please go somewhere else Batman (originally referred to as the Bat-Man and still referred to at times as the Batman) is a fictional Comic book Superhero co-created Some works like the Theme Doom Patch even combined enemies from several movies like Aliens, Predator and The Terminator. This article is about the film for the video games see Aliens (Square computer game and Aliens (arcade game. Predator is a 1987 science fiction, action and Horror film directed by John McTiernan, starring Arnold Schwarzenegger The Terminator is a 1984 science fiction / Action film directed and co-written by James Cameron.

Some add on files were also made which changed the sounds made by the various characters and weapons. Notable ones were samples from Beavis and Butthead and the famous fake orgasm scene from When Harry Met Sally.... Beavis and Butt-head is an American Animated television series created by Mike Judge. When Harry Met Sally is a 1989 Romantic comedy film written by Nora Ephron and directed by Rob Reiner.

Around 1994 and 1995, WADs were primarily distributed online over bulletin board systems or sold in collections on compact discs in computer shops, sometimes bundled with editing guide books. A Bulletin Board System, or BBS, is a Computer system running software that allows users to connect and login to A Compact Disc (also known as a CD) is an Optical disc used to store digital data, originally developed for storing digital audio FTP servers became the primary method in later years. A few WADs have been released commercially, including the Master Levels for Doom II, which was released in 1995 along with Maximum Doom, a CD containing 1,830 WADs that had been downloaded from the Internet. Several thousands of WADs have been created in total: the idgames FTP archive contains over 13,000 files,^[12] and this does not represent the complete output of Doom fans.

Third party programs were also written to handle the loading of various WADs, since the game is a DOS game and all commands had to be entered on the command line in order to run. DOS, short for "Disk Operating System" is a shorthand term for several closely related Operating systems that dominated the IBM PC compatible market A typical launcher would allow the player to select which files to load from a menu, making it much easier to start.

Clones and related products

Main articles: Doom clone, Versions and ports of Doom, and Doom spin-offs and homages

The phrase "Doom clone" was initially popular to describe the style of gameplay in Doom-like games, but after 1996 was gradually replaced by "first-person shooter". Doom clone is a term used to refer to a Computer game with similar Gameplay as the 1993 First-person shooter Doom. Doom is one of the most widely ported Computer games in the First-person shooter genre starting with the original MS-DOS version (released The popularity of the First-person shooter Computer game Doom has resulted in a large number of spin-offs and homages. Doom clone is a term used to refer to a Computer game with similar Gameplay as the 1993 First-person shooter Doom. A first-person shooter ( FPS) is an action Video game from the Shooter game The initial development of Maze War

The popularity of Doom led to the development of a sequel, Doom II: Hell on Earth (1994), as well as expansion packs and alternate versions based on the same game engine, including The Ultimate Doom (1995), Final Doom (1996), and Doom 64 (1997). Doom II Hell on Earth is a First-person shooter Video game created by Id Software. Final Doom is a First-person shooter Computer game that uses the game engine items and characters from Doom II. Doom 64 is a Video game for the Nintendo 64 released by Midway Games in 1997. Doom became a killer application that all capable consoles and operating systems were expected to have, and versions of Doom have subsequently been released for the following systems: DOS, Microsoft Windows, QNX, Irix, NEXTSTEP, Linux, Apple Macintosh, Super NES, Sega 32X, Sony PlayStation, Game Boy Advance, RISC OS, Atari Jaguar, Sega Saturn, Nintendo 64, Tapwave Zodiac, 3DO, Xbox as a feature of Doom 3: Limited Edition, and Xbox 360 on Xbox Live Arcade. A killer application (commonly shortened to killer app) in the jargon of computer programmers and video gamers has been used to refer to any Computer program An operating system (commonly abbreviated OS and O/S) is the software component of a Computer system that is responsible for the management and coordination DOS, short for "Disk Operating System" is a shorthand term for several closely related Operating systems that dominated the IBM PC compatible market Microsoft Windows is a series of Software Operating systems and Graphical user interfaces produced by Microsoft. QNX (pronounced either Q-N-X or Q-nix is a commercial Unix-like Real-time operating system, aimed primarily at the Embedded systems market IRIX is a computer Operating system developed by Silicon Graphics Inc Nextstep was the original object-oriented, multitasking Operating system that NeXT Computer developed to run on its range of proprietary computers Linux (commonly pronounced ˈlɪnəks Macintosh, commonly nicknamed Mac is a Brand name which covers several lines of Personal computers designed developed and marketed by Apple Inc The Super Nintendo Entertainment System or Super NES (also called SNES and Super Nintendo) is a 16-bit Video game console that was The Sega 32X ( Japanese: セガ スーパー32X codenamed Project Mars is an add-on for the Sega Mega Drive Video game console by Sega The PlayStation (abbreviated PS, PSone, PS1, or informally as PSX) is a 32-bit fifth generation Video game console The Game Boy Advance (often shortened to GBA) is a 32-bit handheld video game console developed manufactured and marketed by Nintendo. RISC OS is an Operating system originally created by British manufacturer Acorn Computers for their ARM based Computers ranging The Atari Jaguar is a Video game console, released by Atari Corporation in. The is a 32-bit Video game console that was first released on November 22 1994 in Japan, May 11 1995 in North America The, often abbreviated as N64, is Nintendo 's third home Video game console for the international market Tapwave, founded in Mountain View California in May 2001 introduced the Zodiac mobile entertainment 3DO Interactive Multiplayer (often called simply 3DO) was a Video game console originally produced by Panasonic in. The Xbox is a sixth-generation Video game console produced by Microsoft Corporation. The Xbox 360 is the second Video game console produced by Microsoft, and was developed in cooperation with IBM, ATI, and SiS. Xbox Live Arcade (XBLA is an online service operated by Microsoft that is used to digitally distribute video games to Xbox and Xbox 360 owners The total number of copies of Doom games sold is unknown, but may be well over 4 million; Doom II alone has earned over $100 million in total sales.

The game engine was licensed to several other companies as well, who released their own games based on it, including Heretic, Hexen, Strife and HacX. Hexen Beyond Heretic is a First-person shooter Computer game developed by Raven Software, published by Id Software, and distributed Strife is a First-person shooter computer game developed by Rogue Entertainment and published by Velocity based on the Doom Engine Doom WADs are package files for the computer game Doom or its sequel Doom II, that contain sprites levels and game data There is also a Doom-based game released by a breakfast cereal maker as a product tie-in called Chex Quest, and the United States Marine Corps released Marine Doom, designed to "teach teamwork, coordination and decision-making". A breakfast cereal (often simply called cereal is a packaged food product made from Cereal intended to be consumed as part of a Breakfast. Chex Quest is a total conversion of the computer game Doom (specifically Ultimate Doom) Marine Doom is a modification of the First-person shooter Doom II for US Marines, but also available for download to the

Dozens of new first-person shooter titles appeared following Doom's release, and they were often referred to as "Doom clones" rather than "first-person shooters". Doom clone is a term used to refer to a Computer game with similar Gameplay as the 1993 First-person shooter Doom. Some of these were certainly "clones"—hastily assembled and quickly forgotten about—others explored new grounds of the genre and were highly acclaimed. Many of the games closely imitated features in Doom such as the selection of weapons and cheat codes. Doom's principal rivals were Apogee's Rise of the Triad and Looking Glass Studios' System Shock (which, unlike Doom, featured true 3D gameplay). 3D Realms (legal name Apogee Software Ltd) is the name of a video and computer game producer (not publisher and developer based in Garland Texas, a suburb of Rise of the Triad Dark War (abbreviated as ROTT) is a First-person shooter video game that was first released on February Looking Glass Studios was a computer game development company during the 1990s System Shock is an Action role-playing game developed by Looking Glass Technologies and published by Origin Systems. The popularity of Star Wars-themed WADs is rumored to have been the factor that prompted LucasArts to create their first-person shooter Dark Forces. Star Wars is an epic Space opera franchise initially conceived by George Lucas during the 1970s and significantly expanded LucasArts Entertainment Company LLC is an American Video game developer and publisher. Star Wars Dark Forces is a Video game produced by the LucasArts Entertainment Company. ^[13]

When, three years later, 3D Realms released Duke Nukem 3D, a tongue-in-cheek science fiction shooter based on Ken Silverman's technologically similar Build engine, id Software had nearly finished Quake, its next-generation game, which mirrored Doom's success for the remainder of the 1990s and significantly reduced interest in its predecessor. 3D Realms (legal name Apogee Software Ltd) is the name of a video and computer game producer (not publisher and developer based in Garland Texas, a suburb of Duke Nukem 3D is a First-person shooter computer game developed by 3D Realms and published by Apogee Software. Ken Silverman (born November 1 1975) is a Game programmer, best known for writing the Build engine used in Duke Nukem 3D The Build engine is a First-person shooter engine created by Ken Silverman for 3D Realms. Quake is a First-person shooter Computer game that was released by Id Software on June 22, 1996. The franchise remained in that state until 2000, when Doom 3 was announced. Doom 3 is a Science fiction Survival horror Video game developed by Id Software and published by Activision. A retelling of the original Doom using entirely new graphics technology, Doom 3 was hyped to provide as large a leap in realism and interactivity as the original Doom, but received mixed reactions when released in 2004.

Doom has appeared in several forms in addition to games, including a comic book, four novels by Dafydd Ab Hugh and Brad Linaweaver (loosely based on events and locations in the games), and a film starring Karl Urban and The Rock released in 2005. The popularity of the First-person shooter Computer game Doom has resulted in a large number of spin-offs and homages. Dafydd ab Hugh (born October 22, 1960 as David Friedman) is a U Bradford Swain Linaweaver (born September 1, 1952 is a Nebula Award finalist for the novella version and Prometheus Award winner for the novel version Doom is a 2005 Science fiction Horror film adaptation of the popular Doom series of Video games created by Karl-Heinz Urban (born June 7, 1972) is a New Zealand Actor. He is best known for playing Éomer in the second and third The game's development and impact on popular culture is also the subject of the book Masters of Doom by David Kushner. Masters of Doom How Two Guys Created an Empire and Transformed Pop Culture is a book by David Kushner about Id Software and its influence on popular culture David Kushner is a writer who has contributed to publications including Wired, The New York Times, Rolling Stone and

Controversy

The rocket launcher can be used to explode enemies into piles of gibs. A shoulder-launched missile weapon is a Weapon that fires a Projectile at a target, yet is small enough to be carried by a single person and fired while This article refers to pieces of the internal organs of a computer character The graphic violence made Doom highly controversial.

Doom was and remains notorious for its high levels of violence, gore, and satanic imagery, which have generated much controversy from a broad range of groups. Violence is the exertion of force so as to injure or abuse The word is used broadly to describe the destructive action of natural phenomena like Storms and Earthquakes Graphic violence is the depiction of especially vivid brutal and realistic acts of violence in visual media such as Literature, Film, Television For other uses of the word see Satanism (disambiguation. Satanism can refer to a number of belief systems depending on the user and context Yahoo! Games has it listed as one of the top ten controversial games of all time. Yahoo! Games is the section of the Yahoo! Website in which Yahoo! users can play games either with other users or by themselves ^[14] It has been criticized numerous times by religious organizations for its diabolic undertones and was dubbed a "mass murder simulator" by critic and Killology Research Group founder David Grossman. The Killology Research Group is an advocacy group devoted to research into the idea that First-person shooter games can lead to violent behavior in people Lieutenant Colonel Dave Grossman is an author who has specialized in the study of the psychology of killing which he calls ' Killology ' ^[15] Doom prompted fears that the then-emerging virtual reality technology could be used to simulate extremely realistic killing, and in 1994 led to unsuccessful attempts by Washington state senator Phil Talmadge to introduce compulsory licensing of VR use. Virtual reality ( VR) is a technology which allows a user to interact with a Computer-simulated environment be it a real or imagined one Washington ( is a state in the Pacific Northwest region of the United States. A state senator is a member of a state's Senate, the Upper house in the Bicameral legislature of 49 U

The game again sparked controversy throughout a period of school shootings in the United States when it was found that Eric Harris and Dylan Klebold, who committed the Columbine High School massacre in 1999, were avid players of the game. School shooting is a term used to refer to Gun violence primarily in educational institutions especially the Mass murder or Spree killing of people connected The United States of America —commonly referred to as the Eric David Harris (April 9 1981 – April 20 1999 and Dylan Bennet Klebold (September 11 1981 – April 20 1999 were the High school seniors who committed The Columbine High School massacre occurred on Tuesday April 20 1999 at Columbine High School in Columbine in unincorporated Jefferson County, While planning for the massacre, Harris said that the killing would be "like fucking Doom" and that his shotgun was "straight out of" the game. ^[16] A rumor spread afterwards that Harris had designed Doom levels that looked like the halls of the high school, populated with representations of Harris's classmates and teachers, and that Harris practiced for his role in the shootings by playing these levels over and over. Although Harris did design Doom levels, they were not simulations of Columbine High School. Eric David Harris (April 9 1981 – April 20 1999 and Dylan Bennet Klebold (September 11 1981 – April 20 1999 were the High school seniors who committed

While Doom and other violent video games have been blamed for nation-wide school shootings, recent research featured by Greater Good Science Center shows that the two are not closely related. The Greater Good Science Center, located at the University of California Berkeley is an interdisciplinary research center devoted to the scientific understanding of happy and Harvard medical school researchers Cheryl Olson and Lawrence Kutner found that violent video games did not correlate to school shootings. Harvard Medical School ( HMS) is one of the graduate schools of Harvard University and currently the #1 medical school in America as ranked by U The U.S. Secret Service and Department of Education analyzed 37 incidents of school violence and sought to develop a profile of school shooters, they discovered that the most common traits among shooters were that they were male and had histories of depression and attempted suicide. While many of the killers- like the vast majority of young males- did play video games, this study did not find a relationship between game play and school shootings. In fact, only one eighth of the shooters showed any special interest in violent video games, far less that the number of shooters who seemed attracted to books and movies with violent content. *Doom article from Greater Good magazine.

Continued legacy

Doom is widely regarded as one of the most important titles in gaming history. It was voted the "#1 game of all time" in a poll among over 100 game developers and journalists conducted by GameSpy in July 2001,^[17] and PC Gamer proclaimed Doom the most influential game of all time in its ten-year anniversary issue in April 2004, and named it the second best game of all time a year later (number one was Half-Life). GameSpy, also known as GameSpy Industries, is a division of IGN Entertainment, which operates a network of game websites and provides online video game-related PC Gamer is a magazine founded in Britain in 1993 devoted to PC gaming and published monthly by Future Publishing. However, several game journalists have also contrasted the relatively simplistic gameplay in Doom unfavorably with more story-oriented first-person shooters such as Half-Life.

Although the popularity of the Doom games dropped with the release of Descent (1995), Duke Nukem 3D (1996) and Quake (1996), the game had still retained a strong fan base that continues to this day by playing competitively and creating WADs (the idgames FTP archive receives a few to a dozen new WADs each week as of 2005), and Doom-related news is still tracked at multiple websites such as Doomworld. Descent is a 3D First-person shooter Video game developed by Parallax Software and released in 1995 Duke Nukem 3D is a First-person shooter computer game developed by 3D Realms and published by Apogee Software. Quake is a First-person shooter Computer game that was released by Id Software on June 22, 1996. Doom WADs are package files for the computer game Doom or its sequel Doom II, that contain sprites levels and game data Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Doomworld is the oldest unofficial news Website dedicated to the Computer game Doom, having been founded in 1998. Interest in Doom was renewed in 1997, when the source code for the Doom engine was released (it was also placed under the GNU General Public License in 1999). In Computer science, source code (commonly just source or code) is any sequence of statements or declarations written in some Human-readable Fans then began porting the game to various operating systems, even to previously unsupported platforms such as the Dreamcast, PSP, DS, TI calculators and the iPod, and adding new features such as OpenGL rendering and scripting, which allows WADs to alter the gameplay more radically. See also Software portability In Computer science, porting is the process of adapting software so that an executable program can be created The is Sega 's most recent Video game console and the successor to the Sega Saturn. The PlayStation Portable (officially abbreviated PSP) is a Handheld game console manufactured and marketed by Sony Computer Entertainment. The is a dual-screen Handheld game console developed and manufactured by Nintendo. Texas Instruments ( better known in the electronics industry (and popularly as TI, is an American company based in Dallas, Texas, USA iPod is a popular brand of Portable media players designed and marketed by Apple Inc OpenGL ( Open G raphics L ibrary is a standard specification defining a cross-language Cross-platform API for writing applications that produce "Scripting" redirects here For other uses see Script. There are well over 50 different Doom source ports, some of which remain under active development. A Doom source port is a Source port of the Doom engine, the Game engine used by the Computer game Doom.

Devoted players have spent years creating speedruns for Doom, competing for the quickest completion times and sharing knowledge about routes through the levels and how to exploit bugs in the Doom engine for shortcuts. Ever since the first release of Doom, players competed to compare their Doom playing skills this was greatly aided by the game's ability to record demo files A software bug (or just “bug” is an error flaw mistake Failure, fault or “undocumented feature” in a Computer program that prevents it Achievements include the completion of both Doom and Doom II on the Ultra-Violence difficulty setting in less than 30 minutes each. In addition, a few players have also managed to complete Doom II in a single run on the Nightmare! difficulty setting, on which monsters are more aggressive, launch faster projectiles (or, in the case of the Pinky Demon, simply move faster), and respawn roughly 30 seconds after they have been killed (level designer John Romero characterized the idea of such a run as "[just having to be] impossible"^[18]). Alfonso John Romero (born October 28 1967 in Colorado Springs, Colorado) is a Game designer, programmer, and Movies of most of these runs are available from the COMPET-N website.

Online co-op and deathmatch play still continues on servers listed through services such as Odamex [1], Skulltag [2] and ZDaemon [3].

References

• Leukart, Hank (1994). The "Official" Doom FAQ. Retrieved on November 15, 2005.
• Template:Greater Good magazine

External links

Official Site

• Doom at id Software

Unofficial portal sites with Doom-related news and content

• Doomworld.com – Doomworld
• NewDoom.com
• PlanetDoom.com

Information resources

• 1993: Doom – John Romero's DOOM page. Doomworld is the oldest unofficial news Website dedicated to the Computer game Doom, having been founded in 1998. Alfonso John Romero (born October 28 1967 in Colorado Springs, Colorado) is a Game designer, programmer, and
• Compet-N – the main Doom speedrunning site
• Doom at MobyGames
• Doom (VG) at the Internet Movie Database
• Doom Wiki at Wikia
• The Page of Doom – contains articles about the history of the Doom games