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.
Chex Quest
The development of "Chex Quest" differed from traditional video game development in that the basic game engine had already been created and the bulk of the creation process consisted of aesthetic changes made to the music and artwork from "The Ultimate Doom". For budgetary reasons, Id Software was contacted and an inexpensive license was obtained for the "Doom" engine which was considered obsolete in light of Id's recently released "Quake". "Chex Quest" was the first foray into professional game development for lead artist Charles Jacobi and programmer Scott Holman, though both had previously modded "Doom" levels in the past. In an interview with PC Gamer magazine in 2009, Jacobi stated that the biggest reason for the lasting success of "Chex Quest" has been that it is still essentially a disguised version of "Doom" with basically unaltered game dynamics. Indeed, the game has been recognized for having a sense of humor about its identity and origins.