Doom is a 1993 science fiction horror-themed first-person shooter video game by id Software. It is considered one of the most significant and influential titles in video game history, the original game was divided into three nine-level episodes and was distributed via shareware and mail order. The Ultimate Doom, a release of the original game featuring a fourth episode, was released in 1995. In Doom, players assume the role of a space marine. As a sign of its effect on the industry, first-person shooter games from the boom in the 1990s, helped in no small part by the games release. Its graphic violence, as well as imagery, made Doom the subject of considerable controversy. The Doom franchise was continued with the follow-up Doom II, Hell on Earth and numerous expansion packs, including Master Levels for Doom II. Originally released for PC DOS, the games have later been ported to other platforms. Once the games code was released in 1997, it spawned even more adaptations. The franchise again received attention in 2004 with the release of Doom 3. Another release, simply titled Doom and powered by id Tech 6, was released in 2016, the player takes the role of an unnamed space marine who has been punitively posted to Mars after assaulting his commanding officer, who ordered his unit to fire on civilians. Mars is considered by space marines to be the dullest assignment imaginable and this all changes when the UAC experiments go horribly wrong. Computer systems on Phobos malfunction, Deimos disappears entirely, and something fragging evil starts pouring out of the gateway, the marine hears assorted radio messages, gunfire, and screams, followed by silence, Seems your buddies are dead. The player cannot navigate the ship off of Phobos alone and sees that the way out is to fight through the Phobos complex. As the last man standing, the characters mission is to fight through the entire onslaught of demonic enemies by himself in order to keep them from attacking Earth. Knee-Deep in the Dead, the first episode and the one in the shareware version, is set in the high-tech military bases, power plants, computer centers. It ends with the player entering the teleporter leading to Deimos. In the second episode, The Shores of Hell, the marine has successfully teleported to Deimos and he fights his way through installations on Deimos, similar to those on Phobos, but warped and distorted from the demon invasion and interwoven with beastly architecture
The unnamed protagonist of the Doom series as he appears in The Ultimate Doom.
"Episode I: Knee-Deep in the Dead" takes place in the research, industrial and military facilities on the surface of Phobos. In the screenshot, the player armed with a chainsaw confronts a basic zombie marine on a bridge over a chemical waste storage
To promote Windows 95, Bill Gates, aware of the video game's popularity, showcased a video presentation while digitally superimposed into Doom