Doom (1993 video game)
Doom (typeset as DOOM in official documents and stylized as DooM in other media) is a 1993 first-person shooter (FPS) video game by id Software. It is considered one of the most significant and influential titles in video game history, for having helped to pioneer the now-ubiquitous first-person shooter. The original game was divided into three nine-level episodes and was distributed via shareware and mail order. The Ultimate Doom, an updated release of the original game featuring a fourth episode, was released in 1995 and sold at retail.
Official versions of Doom
In 2010, the game was pulled from the Xbox Live Marketplace because Activision, the game's publisher, no longer has the rights to maintain the game on the Marketplace, but as of January 20, 2012, it has been republished by Bethesda Softworks, the same company that published the Xbox Live Arcade version of "".