Chasm: The Rift

Chasm: The Rift is a first-person shooter video game developed by Ukrainian studio Action Forms and published by Megamedia Corporation in 1997 for the MS-DOS operating system. The game is set across various locations, including military bases, ancient Egyptian tombs, medieval settings, and an alien world. Players assume the role of an elite soldier tasked with single-handedly combating evil forces that infiltrate from the past and future through temporal portals.