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"Doom" is a first-person shooter game originally released for DOS on December 10th, 1993 by id Software and published by GT Interactive. It is perhaps one of the most popular games released for the platform, and in gaming history.


Doom is substantially divided into 3 episodes, These are "Knee Deep In The Dead", "The Shores Of Hell", and "Inferno". A fourth episode, "Thy Flesh Consumed", was included and packaged in the expanded 1995 version of the game ("The Ultimate Doom")

Doom takes place in 2022, in which an unnamed space marine (Doomguy) was posted to mars after assaulting his superior officer, who ordered him and 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, but as 2 years pass, evil demons and monsters starts pouring out the teleporter gateways in both moons, killing or possessing all personnel. The martian unit was assigned and dispatched to investigate, with Doomguy to scout and scan the surrounding perimeter with only a pistol, while the rest of the unit is ambushed and killed by the hordes of monsters and possessed humans. Being unable to pilot a shuttle off Phobos by himself, he realizes that the only way to escape is to go inside and fight his way through the complexes of the moon base.

Summary of Episodic Plot

"Knee Deep In The Dead"

Doomguy must fight his way out off the monster-infested complexes of high-tech military bases, power plants, computer centers and geological anomalies of Phobos to find a teleporter to Deimos. He then defeats the twin barons of hell and enters the teleporter to Deimos, only to be overwhelmed by even more hordes of demons and monsters.

"The Shores Of Hell"

Doomguy fights through the installations of Deimos, similar of those to Phobos, but heavily warped and distorted from the demon invasion and also woven with beastly and hellish architecture. on the way, he defeats the Cybedemon


Doomguy discovers the vanished moon is actually floating above hell itself, leading him to grapple down and to defeat every monster that comes to his way to defeat the spider mastermind that planned the invasion. He succeeds and finds a hidden doorway back to Earth, only to discover that his pet rabbit, Daisy has been killed and Earth has been invaded and attacked by demons and monsters.


In every episode, the player must traverse the levels, filled with hordes of enemies while managing supplies found such as health, armor, weapons, and ammunition and must exit the level by finding keycards to open doors, flicking switches, using lifts, and among others. Enemies have very simple yet dangerous behavior, consisting of moving towards opponents, charging melee attacks (Demons, barons of hell, and Lost Souls), shooting opponents with the use of hitscanning weapons (Possessed human and sergeants), or hitting them with somekind of a projectile (Imps, and Cyberdemons), The player can also use power-ups items scattered randomly in levels to defeat enemies easier (Bezerk), to have more health (Soulsphere), to easily navigate the map (Computer maps), to be invincible for a short period of time (Invincibility Sphere), Etc.

In addition to the single-player mode, Doom features two multiplayer modes playable over a local network: "cooperative", in which two to four players team up to play through the main game, and "deathmatch", in which two to four players play against each other. Online multiplayer was later made available a year after launch through the DWANGO service.

Notes & Trivia

  • Doom's initial 1.0 (reads V.0.99.) release did not include the nightmare! difficulty
  • Chocolate Doom is one of the best source ports which is able to recreate the original 1993 MS-DOS experience and featured keyboard mapping, a feature not present in the original version of Doom

See Also

External Links