What video game is a roguelike game devloped by ChaosForge and is a  science fiction horror-themed first person shooter?
Doom (1993 video game) Doom (typeset as DOOM in official documents) is a 1993 science fiction horror-themed 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.
Alien Carnage Alien Carnage, originally released as Halloween Harry, is a side-scrolling platform game developed by Interactive Binary Illusions and SubZero Software, and distributed by Apogee Software. The game features 256 colour VGA graphics and background music in MOD format. "Alien Carnage" is composed of four episodes. The first episode was released as shareware, and the rest were distributed commercially. In May 2007, John Passfield and 3D Realms released "Alien Carnage" as freeware.