With one third of the game, nine levels, distributed as shareware, Doom was played by an estimated 15–20 million people within two years of its release, popularizing the mode of gameplay and spawning a gaming subculture. In Doom, players assume the role of an unnamed space marine, who became popularly nicknamed ' Doomguy' by the community before being retconned as Doom Slayer, fighting his way through hordes of invading demons from Hell. The Ultimate Doom, an updated release of the original game featuring a fourth episode, was released in 1995 and sold at retail. It was first released on December 10, 1993, when a shareware copy was uploaded to an FTP server at the University of Wisconsin. The game introduced deathmatch and cooperative play in the explicit sense, and helped further the practice of allowing and encouraging fan-made modifications of commercial video games. With a science fiction and horror style, it gives the players the role of marines who find themselves in the focal point of an invasion from Hell. For the reboot released in 2016, see Doom (2016).ĭoom (officially cased DOOM and occasionally DooM by fans, based on the Doom logo) is the first release of the Doom series, and one of the games that consolidated the first-person shooter genre. For the shareware data file, see DOOM1.WAD. Single-player, multiplayer 'Doom 1' redirects here.