Doom (1993 video game)

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Doom cover art.jpg
Cover art by Don Ivan Punchatz
Developer(s)id Software
Publisher(s)id Software
  • Adrian Carmack
  • Kevin Cloud
Composer(s)Robert Prince
Engineid Tech 1
Genre(s)First-person shooter
Mode(s)Single-player, multiplayer

Doom is a 1993 first-person shooter (FPS) game developed by id Software for MS-DOS. Players assume the role of a space marine, popularly known as Doomguy, fighting his way through hordes of invading demons from Hell. The first episode, comprising nine levels, was distributed freely as shareware and played by an estimated 15–20 million people within two years; the full game, with two further episodes, was sold via mail order. An updated version with an additional episode and more difficult levels, The Ultimate Doom, was released in 1995 and sold at retail.

Doom is one of the most significant games in video game history, frequently cited as one of the greatest games ever made. Along with its predecessor Wolfenstein 3D, it helped define the FPS genre and inspired numerous similar games, often called Doom clones. It pioneered online distribution and technologies including 3D graphics, networked multiplayer gaming, and support for custom modifications via packaged WAD files. Its graphic violence and hellish imagery drew controversy.

Doom has been ported to numerous platforms. The Doom franchise continued with Doom II: Hell on Earth (1994) and expansion packs including Master Levels for Doom II (1995). The source code was released in 1997 under a proprietary license, and then later in 1999 under the GNU General Public License v2.0 or later. Doom 3, a horror game built with the id Tech 4 engine, was released in 2004, followed by a 2005 Doom film. id returned to the fast-paced action of the classic games with the 2016 game Doom and the 2020 sequel Doom Eternal.


The player armed with a chainsaw confronts an undead sergeant on a bridge over a chemical waste storage in "Knee-Deep in the Dead"

Doom is a first-person shooter presented with early 3D graphics. The player controls an unnamed space marine—later termed "Doomguy"—through a series of levels set in military bases on the moons of Mars and in Hell. To finish a level, the player must traverse through the area to reach a marked exit room. Levels are grouped together into named episodes, with the final level focusing on a boss fight with a particularly difficult enemy. While the environment is presented in a 3D perspective, the enemies and objects are instead 2D sprites presented from several preset viewing angles, a technique sometimes referred to as 2.5D graphics with its technical name called ray casting. Levels are often labyrinthine, and a full screen automap is available which shows the areas explored to that point.

While traversing the levels, the player must fight a variety of enemies, including demons and possessed undead humans, while managing supplies of ammunition, health, and armor. Enemies often appear in large groups, and the game features five difficulty levels which increase the quantity and damage done by enemies, with enemies respawning upon death and moving faster than normal on the hardest difficulty setting. The monsters have very simple behavior, consisting of either moving toward their opponent, or attacking by throwing fireballs, biting, and clawing. They will reactively fight each other if one monster inadvertently harms another, though most monsters are immune to attacks from their own kind. The environment can include pits of toxic waste, ceilings that lower and crush everything, and locked doors requiring a keycard or a remote switch. The player can find weapons and ammunition throughout the levels or can collect them from dead enemies, including a pistol, a chainsaw, a plasma rifle, and the BFG 9000. Power-ups include health or armor points, a mapping computer, partial invisibility, a safety suit against toxic waste, invulnerability, or a super-strong melee berserker status.

The main campaign mode is single-player mode, in an episodic succession of missions. Two multiplayer modes are playable over a network: cooperative, in which two to four players team up to complete the main campaign,[5] and deathmatch, in which two to four players compete. Four-player online multiplayer mode via dialup was made available one year after launch through the DWANGO service.[6] Cheat codes give the player instant super powers including invulnerability, all weapons, and walking through walls.[7][8][9][10]


The unnamed protagonist of the Doom series known as "the Doom marine" as he appears in The Ultimate Doom

Doom is divided into three episodes: "Knee-Deep in the Dead", "The Shores of Hell", and "Inferno". A fourth episode, "Thy Flesh Consumed", was added in an expanded version of the game, The Ultimate Doom, released in 1995, two years later and one year after Doom II. The campaign contains very few plot elements, with the minimal story instead given in the instruction manual and in short text segues between episodes.

In the future, the player character (an unnamed space marine, known as "the Doom marine" or simply "Doom guy") has been punitively posted to Mars after assaulting a superior officer, who ordered his unit to fire on civilians. The space marines act as security for the Union Aerospace Corporation's radioactive waste facilities, which are used by the military to perform secret experiments with teleportation by creating gateways between the two moons of Mars, Phobos and Deimos. Three years after Doom guy's posting to Mars, Deimos disappears entirely and "something fraggin' evil" starts pouring out of the teleporter gateways, killing or possessing all personnel on Phobos. The Martian marine unit is dispatched to investigate, with Doom guy left to guard the perimeter with only a pistol while the rest of the group proceeds inside the base. Doom guy listens to the sound of combat on the radio for hours until there is nothing but silence. With no way off the moon and wanting to avenge his friends, Doom guy decides to fight his way through the complexes of the moon base.[11]

As the last man standing, Doom guy fights through the onslaught of demonic enemies to keep them from attacking Earth. In "Knee-Deep in the Dead", Doom guy fights through the high-tech military bases, power plants, computer centers and geological anomalies on Phobos. It ends with Doom guy defeating the two powerful Hell Knights guarding the teleporter to the Deimos base, and thereupon entering the teleporter leading to Deimos, only to be overwhelmed by monsters in a seemingly unwinnable battle on the other side. In "The Shores of Hell" Doom guy awakens with only the pistol once again and fights through installations on Deimos, similar to those on Phobos, but warped and distorted from the demon invasion and interwoven with beastly architecture. After defeating the titanic Cyberdemon, the Doom marine crawls to the edge of Deimos, which has been flattened into a pancake shape, only to discover that the vanished moon is floating above Hell. "Inferno" begins after the marine rappels off of Deimos to the surface of Hell. The Doom marine battles his way through Hell, ultimately finding and slaying the Spider Mastermind that had masterminded the invasion of Phobos and Deimos. A hidden doorway back to Earth opens for the hero, who has "proven too tough for Hell to contain". The Doom marine, however, is greeted by the grisly sight of a burning city and a rabbit's head impaled on a stake (named in The Ultimate Doom as the Doom marine's pet rabbit, Daisy), showing that the demons have invaded Earth. In "Thy Flesh Consumed", the Doom marine fights the demons on Earth through a variety of disconnected high-tech bases and demonic temples, though ultimately the forces of Hell are not defeated in their invasion of Earth, setting the stage for Doom II: Hell on Earth.


Black-and-white photo of the head and shoulders of a man wearing glasses
John Carmack in 2006


In May 1992, id Software released Wolfenstein 3D, later called the "grandfather of 3D shooters",[12][13] specifically first-person shooters, because it established the fast-paced action and technical prowess commonly expected in the genre and greatly increased the genre's popularity.[12][14][15][16] Immediately following its release most of the id Software team began work on a set of episodes for the game, titled Spear of Destiny, while id co-founder and lead programmer John Carmack instead focused on technology research for the company's next game. Following the release of Spear of Destiny in September 1992, the team began to plan their next game. They wanted to create another 3D game using a new engine Carmack was developing, but were largely tired of Wolfenstein. They initially considered making another game in the Commander Keen series, as proposed by co-founder and lead designer Tom Hall, but decided that the platforming gameplay of the series was a poor fit for Carmack's fast-paced 3D engines. Additionally, the other two co-founders of id, designer John Romero and lead artist Adrian Carmack, wanted to create something in a darker style than the Keen games. John Carmack then came up with his own concept: a game about using technology to fight demons, inspired by the Dungeons & Dragons campaigns the team played, combining the styles of Evil Dead II and Aliens.[17][18] The concept originally had a working title of "Green and Pissed", but Carmack soon renamed the proposed game "Doom" after a line in the film The Color of Money: "'What you got in there?' / 'In here? Doom.'"[17][19]

The team agreed to pursue the Doom concept, and development began in November 1992.[18] The initial development team was composed of five people: programmers John Carmack and Romero, artists Adrian Carmack and Kevin Cloud, and designer Hall.[20] They moved offices to a dark office building, which they named "Suite 666", and drew inspiration from the noises coming from the dentist's office next door. They also decided to cut ties with Apogee Software, their previous publisher, and to instead self-publish Doom.[21]


Face of a smiling man with long black hair and glasses
John Romero in 2012

Early in development, rifts in the team began to appear. At the end of November, Hall delivered a design document, which he named the Doom Bible, that described the plot, backstory, and design goals for the project.[18] His design was a science fiction horror concept wherein scientists on the Moon open a portal from which aliens emerge. Over a series of levels, the player discovers that the aliens are demons while hell steadily infects the level design over the course of the game.[22] John Carmack not only disliked the idea but dismissed the idea of having a story at all: "Story in a game is like story in a porn movie; it's expected to be there, but it's not that important." Rather than a deep story, he wanted to focus on the technological innovations of the game, dropping the levels and episodes of Wolfenstein in favor of a fast, continuous world. Hall disliked the idea, but the rest of the team sided with Carmack.[22] Hall spent the next few weeks reworking the Doom Bible to work with Carmack's technological ideas.[18] Hall was forced to rework it again in December, however, after the team decided that they were unable to create a single, seamless world with the hardware limitations of the time, which contradicted much of the document.[18]

At the start of 1993, id put out a press release, touting Hall's story about fighting off demons while "knee-deep in the dead". The press release proclaimed the new game features that John Carmack had created, as well as other features, including multiplayer gaming features, that had not yet even been designed.[22] Early versions of the game were built to match the Doom Bible; a "pre-alpha" version of the first level includes Hall's introductory base scene.[23] Initial versions of the game also retain "arcade" elements present in Wolfenstein 3D, like score points and score items, but those were removed early in development as they were out of tone.[20] Other elements, such as a complex user interface, an inventory system, a secondary shield protection, and lives were modified and slowly removed over the course of development.[18][24]

Sandy Petersen in 2004

Soon, however, the Doom Bible as a whole was rejected. Romero wanted a game even "more brutal and fast" than Wolfenstein, which did not leave room for the character-driven plot Hall had created. Additionally, the team believed it emphasized realism over entertaining gameplay, and they did not see the need for a design document at all.[22] Some ideas were retained, but the story was dropped and most of the game design was removed.[25] By early 1993, levels were being created for the game and a demo was produced. John Carmack and Romero, however, disliked Hall's military base-inspired level design. Romero especially believed that the boxy, flat level designs were uninspiring, too similar to Wolfenstein, and did not show off the engine's capabilities. He began to create his own, more abstract levels for the game, which the rest of the team saw as a great improvement.[22][26]

Hall was upset with the reception to his designs and how little impact he was having as the lead designer.[22][23] He was also upset with how much he was having to fight with John Carmack in order to get what he saw as obvious gameplay improvements, such as flying enemies, and began to spend less time at work.[18] In July the other founders of id fired Hall, who went to work for Apogee.[22] He was replaced in September, ten weeks before the game was released, by game designer Sandy Petersen.[27][28] The team also added a third programmer, Dave Taylor.[29] Petersen and Romero designed the rest of Doom's levels with different aims: the team believed that Petersen's designs were more technically interesting and varied, while Romero's were more aesthetically interesting.[28] In late 1993, after the multiplayer component was coded, the development team began playing four-player multiplayer games matches, which Romero termed "deathmatch".[30] According to Romero, the game's deathmatch mode was inspired by fighting games such as Street Fighter II, Fatal Fury, and Art of Fighting.[31]


A NeXTstation computer

Doom was programmed largely in the ANSI C programming language, with a few elements in assembly language, targeting the IBM PC and MS-DOS platform by compiling with Watcom C/C++ and using the included royalty-free 80386 DOS-extender.[32] id developed on NeXT computers running the NeXTSTEP operating system.[33] The data used by the game engine, including level designs and graphics files, are stored in WAD files, short for "Where's All the Data?". This allows for any part of the design to be changed without needing to adjust the engine code. Carmack designed this system so fans could easily modify the game; he had been impressed by the modifications made by fans of Wolfenstein 3D, and wanted to support that with an easily swappable file structure along with releasing the map editor online.[34]

Unlike Wolfenstein, which had flat levels with walls at right angles, the Doom engine allows for walls and floors at any angle or height, though two traversable areas cannot be on top of each other. The lighting system was based on adjusting the color palette of surfaces directly: rather than calculating how light traveled from light sources to surfaces using ray tracing, the game calculates the light level of a small area based on its distance from light sources. It then modifies the color palette of that section's surface textures to mimic how dark it would look.[33] This same system is used to cause far away surfaces to look darker than close ones.[22] Romero came up with new ways to use Carmack's lighting engine such as strobe lights.[22] He programmed engine features such as switches and movable stairs and platforms.[18][20] After Romero's complex level designs started to cause problems with the engine, Carmack began to use binary space partitioning to quickly select the reduced portion of a level that the player could see at a given time.[18][28][35] Taylor programmed other features into the game, added cheat codes; some, such as idspispopd, were based on ideas their fans had submitted online while eagerly awaiting the game.[20]

Model of the Spider Mastermind

Adrian Carmack was the lead artist for Doom, with Kevin Cloud as an additional artist. They designed the monsters to be "nightmarish", with graphics that are realistic and dark instead of staged or rendered, so a mixed media approach was taken.[36] The artists sculpted models of some of the enemies, and took pictures of them in stop motion from five to eight different angles so that they could be rotated realistically in-game. The images were then digitized and converted to 2D characters with a program written by John Carmack.[22] Adrian Carmack made clay models for a few demons, and had Gregor Punchatz build latex and metal sculptures of the others.[18][20] The weapons were made from combined parts of children's toys.[18] The developers scanned themselves as well, using Cloud's arm for the marine's arm holding a gun, and Adrian's snakeskin boots and wounded knee for textures.[22]

Music and sound[]

As with Wolfenstein 3D, id hired composer Bobby Prince to create the music and sound effects. Romero directed Prince to make the music in techno and metal styles. Many tracks were directly inspired by songs by metal bands such as Alice in Chains and Pantera.[28][37] Prince believed that ambient music would be more appropriate, and produced numerous tracks in both styles in hope of convincing the team, and Romero incorporated both.[38] Prince did not make music for specific levels, as they were composed before the levels were completed; instead, Romero assigned each track to each level late in development. Prince created the sound effects based on short descriptions or concept art of a monster or weapon, and adjusted them to match the completed animations.[39] The monster sounds were created from animal noises, and Prince designed all the sounds to be distinct on the limited sound hardware of the time, even when many sounds were playing at once.[28][38] He also designed the sound effects to play on different frequencies from those used for the MIDI music, so they would clearly cut through the music.[40]


With plans to self-publish, the team had to set up the systems to sell Doom as it neared completion. Jay Wilbur, who had been hired as CEO and sole member of the business team, planned the marketing and distribution of Doom. He believed that the mainstream press was uninterested in the game, and as id would make the most money off of copies they sold directly to customers—up to 85 percent of the planned US$40 price—he decided to leverage the shareware market as much as possible, buying only a single ad in any gaming magazine. Instead, he reached out directly to software retailers, offering them copies of the first Doom episode for free, allowing them to charge any price for it, in order to spur customer interest in buying the full game directly from id.[28]

Doom's original release date was the third quarter of 1993, which the team did not meet. By December 1993, the team was working non-stop on the game, with several employees sleeping at the office. Programmer Dave Taylor claimed that working on the game gave him such a rush that he would pass out from the intensity. Id began receiving calls from people interested in the game or angry that it had missed its planned release date, as hype for the game had been building online. At midnight on December 10, 1993, after working for 30 straight hours, the development team at id uploaded the first episode of the game to the Internet, letting interested players distribute it for them. So many users were connected to the first FTP server that they planned to upload the game to, at the University of Wisconsin–Madison, that even after the network administrator increased the number of connections while on the phone with Wilbur, id was unable to connect, forcing them to kick all other users off to allow id to upload the game. When the upload finished thirty minutes later, 10,000 people attempted to download the game at once, crashing the university's network.[30]

Within hours of Doom's release, university networks were banning Doom multiplayer games, as a rush of players overwhelmed their systems.[30] After being alerted by network administrators the morning after release that the game's deathmatch network connection setup was crippling some computer networks, John Carmack quickly released a patch to change it, though many administrators had to implement Doom-specific rules to keep their networks from crashing due to the overwhelming traffic.[41]

In late 1995, Doom was estimated to be installed on more computers worldwide than Microsoft's new operating system, Windows 95, even with Microsoft's million-dollar advertising campaigns.[3] In 1995, an expanded version of the game, The Ultimate Doom, was released, containing a fourth episode.[42]


Microsoft hired id Software to port Doom to Windows with the WinG API,[43][when?] and Microsoft CEO Bill Gates briefly considered buying the company.[6] Microsoft developed a Windows 95 port of Doom to promote Windows as a gaming platform. The development was led by Gabe Newell, who later founded the game company Valve.[3] One Windows 95 promotional video had Gates digitally superimposed into the game.[44]

An unofficial port of Doom to Linux was released by id programmer Dave Taylor in 1994; it was hosted by id but not supported or made official.[45] Official ports were released for Sega 32X, Atari Jaguar, and Mac OS in 1994, SNES and PlayStation in 1995, 3DO in 1996, Sega Saturn in 1997, Acorn Risc PC in 1998, Game Boy Advance in 2001, Xbox 360 in 2006, iOS in 2009, and Nintendo Switch in 2019. Notable exceptions in the list of official ports, as well as Linux, are AmigaOS and Symbian.[46][47][48] Some of these were bestsellers even many years after the initial release.[49] Doom has also been ported unofficially to numerous platforms; so many ports exist, including for esoteric devices such as smart thermostats and oscilloscopes, that variations on "It runs Doom" or "Can it run Doom?" are long-running memes.[50][51][52]


The ability for user-generated content to provide custom levels and other game modifications using WAD files became a popular aspect of Doom. Gaining the first large mod-making community, Doom affected the culture surrounding first-person shooters, and also the industry. Several future professional game designers started their careers making Doom WADs as a hobby, such as Tim Willits, who later became the lead designer at 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. 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, including Aliens, Star Wars, The Simpsons, South Park, Sailor Moon, Dragon Ball Z, Pokémon, Beavis and Butt-head, Batman, and Sonic the Hedgehog.[53] Some works, like the Theme Doom Patch, combined enemies from several films, such as Aliens, Predator, and The Terminator. Some add-on files were also made that changed the sounds made by the various characters and weapons.

From 1994 to 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. 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. The idgames FTP archive contains more than 18,000 files,[54] and this represents only a fraction of the complete output of Doom fans. Third-party programs were also written to handle the loading of various WADs, since all commands must be entered on the DOS command line to run. A typical launcher would allow the player to select which files to load from a menu, making it much easier to start. In 1995, WizardWorks released the D!Zone pack featuring hundreds of levels for Doom and Doom II.[55] D!Zone was reviewed in Dragon by Jay & Dee; Jay gave the pack 1 out of 5 stars, and Dee gave the pack 1½ stars.[55]

In 2016, Romero published two new Doom levels: E1M4b ("Phobos Mission Control") and E1M8b ("Tech Gone Bad").[56][57] In 2018, for the 25th anniversary of Doom, Romero announced Sigil, an unofficial Episode Five consisting of 9 missions.[58] It was released on May 22, 2019, with a soundtrack by Buckethead. It was then released for free on May 31, with a MIDI soundtrack by James Paddock.[59]


Commercial performance[]

With the release of Doom, millions of users installed the Shareware version on their computer and id Software quickly began making $100,000 daily (for $9 per copy).[90][91] Sandy Petersen later remarked that the game "sold a couple of hundred thousand copies during its first year or so", as piracy kept its initial sales from rising higher.[92] id sold 3.5 million physical copies from its release through 1999.[93] According to PC Data, which tracked sales in the United States, Doom's shareware edition had yielded 1.36 million units sold and $8.74 million in revenue in the United States. This led PC Data to declare it the country's fourth-best-selling computer game for the period between January 1993 and April 1998.[94] The Ultimate Doom SKU reached sales of 787,397 units by September 1999. At the time, PC Data ranked them as the country's eighth- and 20th-best-selling computer games since January 1993.[95] In addition to its sales, the game's status as shareware dramatically increased its market penetration. PC Zone's David McCandless wrote that the game was played by "an estimated six million people across the globe",[92] and other sources estimate that 10–20 million people played Doom within 24 months of its launch.[96]

Doom became a problem at workplaces, both occupying the time of employees and clogging computer networks. Intel,[97] Lotus Development, and Carnegie Mellon University were among many organizations reported to form policies specifically disallowing Doom-playing during work hours. At the Microsoft campus, Doom was by one account equal to a "religious phenomenon".[6] Doom was #1 on Computer Gaming World's "Playing Lately?" survey for February 1994. One reader said that "No other game even compares to the addictiveness of NetDoom with four devious players! ... The only game I've stayed up 72+ straight hours to play", and another reported that "Linking four people together for a game of Doom is the quickest way to destroy a productive, boring evening of work".[98]

Contemporary reviews[]

To promote Windows 95, Bill Gates, aware of the video game's popularity, showcased a video presentation while digitally superimposed into Doom

Although Petersen said Doom was "nothing more than the computer equivalent of Whack-A-Mole",[99] Doom received critical acclaim and was widely praised in the gaming press, broadly considered to be one of the most important and influential titles in gaming history. Upon release, GamesMaster gave it a 90% rating.[73] Dragon gave it five stars, praising the improvements over Wolfenstein 3D, the "fast-moving arcade shoot 'em up" gameplay, and network play.[70] Computer and Video Games gave the game a 93% rating, praising its atmosphere and stating that "the level of texture-mapped detail and the sense of scale is awe inspiring", but criticized the occasionally repetitive gameplay and considered the violence excessive.[69] A common criticism of Doom was that it was not a true 3D game, since the game engine did not allow corridors and rooms to be stacked on top of one another (room-over-room), and instead relied on graphical trickery to make it appear that the player character and enemies were moving along differing elevations.[100]

Computer Gaming World stated in February 1994 that Wolfenstein 3D fans should "look forward to a delight of insomnia", and "Since networking is supported, bring along a friend to share in the visceral delights".[101] A longer review in March 1994 said that Doom "was worth the wait ... a wonderfully involved and engaging game", and its technology "a new benchmark" for the gaming industry. The reviewer praised the "simply dazzling" graphics", and reported that "DeathMatches may be the most intense gaming experience available today". While criticizing the "ho-hum endgame" with a too-easy end boss, he concluded that Doom "is a virtuoso performance".[102]

Edge in March 1994 praised the graphics and levels but criticized the "simple 3D perspective maze adventure/shoot 'em up" gameplay. The review concluded: "You’ll be longing for something new in this game. If only you could talk to these creatures, then perhaps you could try and make friends with them, form alliances... Now, that would be interesting."[71] The sentiment later attracted widespread mockery in the 2010s, and "if only you could talk to these creatures" became a running joke in video game culture. A 2016 piece in the International Business Times defended the sentiment, saying it anticipated the dialogue systems of games such as Skyrim, Mass Effect, and Undertale.[103]

In 1994, PC Gamer UK named Doom the third best computer game of all time. The editors wrote: "Although it's only been around for a couple of months, Doom has already done more to establish the PC's arcade clout than any other title in gaming history."[89] In 1994 Computer Gaming World named Doom Game of the Year.[77] The game has been ported to numerous console gaming platforms both domestically and abroad where it maintained its popularity, receiving generally favorable critical reception.[104][61][62]

Retrospective reception[]

In 1995, Next Generation said it was "The most talked about PC game ever – and with good reason. Running on a 486 machine (essential for maximum effect), Doom took PC graphics to a totally new level of speed, detail, and realism, and provided a genuinely scary degree of immersion in the gameworld."[105] In 1996, Computer Gaming World named it the fifth best video game of all time,[78] and the third most-innovative game.[79] In 1998, PC Gamer declared it the 34th-best computer game ever released, and the editors called it "Probably the most imitated game of all time, Doom continued what Wolfenstein 3D began and elevated the fledgling 3D-shooter genre to blockbuster status".[106]

In 2001, Doom was voted the number one game of all time in a poll among over 100 game developers and journalists conducted by GameSpy.[80] In 2003, IGN ranked it as the 44th top video game of all time and also called it "the breakthrough game of 1993", adding: "Its arsenal of powerful guns (namely the shotgun and BFG), intense level of gore and perfect balance of adrenaline-soaked action and exploration kept this gamer riveted for years."[81] PC Gamer proclaimed Doom the most influential game of all time in its ten-year anniversary issue in April 2004.

In 2004, readers of Retro Gamer voted Doom as the ninth top retro game, with the editors commenting: "Only a handful of games can claim that they've changed the gaming world, and Doom is perhaps the most qualified of them all."[107] In 2005, IGN ranked it as the 39th top game.[82] On March 12, 2007, The New York Times reported that Doom was named to a list of the ten most important video games of all time, the so-called game canon.[108] The Library of Congress took up this video game preservation proposal and began with the games from this list.[84][109]

In 2009, GameTrailers ranked Doom as the number one "breakthrough PC game".[85] That year Game Informer put Doom sixth on the magazine's list of the top 200 games of all time, stating that it gave "the genre the kick start it needed to rule the gaming landscape two decades later".[86] Game Informer staff also put it sixth on their 2001 list of the 100 best games ever.[110] IGN included Doom at 2nd place in the Top 100 Video Game Shooters of all Time, just behind Half-Life, citing the game's "feel of running and gunning", memorable weapons and enemies, pure and simple fun, and its spreading on nearly every gaming platform in existence.[83]

In 2012, Time named it one of the 100 greatest video games of all time as "it established the look and feel of later shooters as surely as Xerox PARC established the rules of the virtual desktop", adding that "its impact also owes a lot to the gonzo horror sensibility of its designers, including John Romero, who showed a bracing lack of restraint in their deployment of gore and Satanic iconography".[87] Including Doom on the list of the greatest games of all time, GameSpot wrote that "despite its numerous appearances in other formats and on other media, longtime fans will forever remember the original 1993 release of Doom as the beginning of a true revolution in action gaming".[88]

In 2021, Kotaku listed Doom as the third best game in the series, behind Doom II and Doom (2016). They said that the gameplay "still holds up", but argued it was inferior to Doom II due to the latter's improved enemy variety.[111]


Doom's intense level of graphic violence made the game highly controversial, as seen in the gory effects of a rocket hitting a group of enemies.

Doom was notorious for its high levels of graphic violence[112] and satanic imagery, which generated controversy from a broad range of groups. Doom for the Genesis 32X was one of the first video games to be given an M for Mature rating from the Entertainment Software Rating Board due to its violent gore and nature.[113] Yahoo! Games listed it as one of the top ten most controversial games of all time.[114] It was criticized by religious organizations for its diabolic undertones and was dubbed a "mass murder simulator" by critic and Killology Research Group founder David Grossman.[115] Doom prompted fears that the then-emerging virtual reality technology could be used to simulate extremely realistic killing.

The game again sparked controversy in the United States when it was found that Eric Harris and Dylan Klebold, who committed the Columbine High School massacre on April 20, 1999, were avid players of the game. While planning for the massacre, Harris said in his journal that the killing would be "like playing Doom", and "it'll be like the LA riots, the Oklahoma bombing, World War II, Vietnam, Duke Nukem and Doom all mixed together", and that his shotgun was "straight out of the game".[116] A rumor spread afterwards that Harris had designed a Doom level that looked like the high school, populated with representations of Harris's classmates and teachers, and that he practiced for the shootings by playing the level repeatedly. Although Harris did design custom Doom levels (which later became known as the "Harris levels"), none have been found to be based on Columbine High School.[117]

In the earliest release versions, the level E1M4: Command Control contains a swastika-shaped structure, which was put in as a homage to Wolfenstein 3D. The swastika was removed in later versions; according to Romero, the change was done out of respect after id Software received a complaint from a military veteran.[20]


Doom franchise[]

Doom has appeared in several forms in addition to video games, including a Doom comic book, four novels by Dafydd Ab Hugh and Brad Linaweaver (loosely based on events and locations in the games), a Doom board game and a live-action film starring Karl Urban and The Rock released in 2005. The game's development and impact on popular culture is the subject of the book Masters of Doom: How Two Guys Created an Empire and Transformed Pop Culture by David Kushner.

The Doom series remained dormant between 1997 and 2000, when Doom 3 was finally announced. A retelling of the original Doom using entirely new graphics technology and a slower paced survival horror approach, Doom 3 was hyped to provide as large a leap in realism and interactivity as the original game and helped renew interest in the franchise when it was released in 2004, under the id Tech 4 game engine.

The series again remained dormant for 10 years until a reboot, simply titled Doom and running on the new id Tech 6, was announced with a beta access to players that had pre-ordered Wolfenstein: The New Order. The game held its closed alpha multiplayer testing in October 2015, as closed and open beta access ran during March to April 2016. Returning to the series' roots in fast-paced action and minimal storytelling, the full game eventually released worldwide on May 13, 2016. The project initially started as Doom 4 in May 2008, set to be a remake of Doom II: Hell on Earth and ditching the survival horror aspect of Doom 3. Development completely restarted as id's Tim Willits remarked that Doom 4 was "lacking the personality of the long-running shooter franchise".[118]


By 1998, the phrase "first-person shooter" had firmly superseded "Doom clone".

Doom was influential and dozens of new first-person shooter games appeared following Doom's release, often referred to as "Doom clones".[111] The term was initially popular, and after 1996, gradually replaced by "first-person shooter", which had firmly superseded around 1998. Some of these were cheap clones, hastily assembled and quickly forgotten, and others explored new grounds of the genre with high acclaim. Many of Doom's closely imitated features include the selection of weapons and cheat codes. Some successors include Apogee's Rise of the Triad (based on the Wolfenstein 3D engine) and Looking Glass Studios's System Shock.[citation needed] 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.[119]

The Doom game engine id Tech 1 was licensed by id Software to several other companies, who released their own games using the technology, including Heretic, Hexen: Beyond Heretic, Strife: Quest for the Sigil, and Hacx: Twitch 'n Kill. A Doom-based game called Chex Quest was released in 1996 by Ralston Foods as a promotion to increase cereal sales,[120] and the United States Marine Corps produced Marine Doom as a training tool, later released to the public.

When 3D Realms released Duke Nukem 3D in 1996, a tongue-in-cheek science fiction shooter based on Ken Silverman's technologically similar Build engine, id Software had nearly finished developing Quake, its next-generation game, which mirrored Doom's success for much of the remainder of the 1990s and reduced interest in its predecessor (Wolfenstein 3D).


In addition to the thrilling nature of the single-player game, the deathmatch mode was an important factor in the game's popularity. Doom was not the first first-person shooter with a deathmatch mode; Maze War, an FPS released in 1974, was running multiplayer deathmatch over ethernet on Xerox computers by 1977. The widespread distribution of PC systems and the violence in Doom made deathmatching particularly attractive. Two-player multiplayer was possible over a phone line by using a modem, or by linking two PCs with a null-modem cable. Because of 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".[121]

Although the popularity of the Doom games dropped with the release of more modern first-person shooters, the game still retains a strong fan base that continues to this day by playing competitively and creating WADs, and Doom-related news is still tracked at multiple websites such as Doomworld. Interest in Doom was renewed in 1997, when the source code for the Doom engine was released (it was also placed under the GNU GPL-2.0-or-later on October 3, 1999). Fans then began porting the game to various operating systems, even to previously unsupported platforms such as the Dreamcast. As for the PC, over 50 different Doom source ports have been developed. New features such as OpenGL rendering and scripting allow WADs to alter the gameplay more radically.

Devoted players have spent years creating speedruns for Doom, competing for the quickest completion times of individual levels and the whole game and sharing knowledge about routes through the levels and how to exploit bugs in the Doom engine for shortcuts. Doom was one of the first games to have a speedrunning community, which has remained active up until the present day. A record speedrun on E1M1, the first level in the game, was achieved in September 1998, and took 20 years and “tens of thousands of futile attempts” in order to be surpassed.[122][123] 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 difficulty setting "Nightmare!", 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").[124] Movies of most of these runs are available from the COMPET-N website.[125]

Online co-op and deathmatch play are still continued on fan-created services.


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