Geist is a first-person shooter and action-adventure game for the Nintendo GameCube, developed by n-Space and published by Nintendo. Released in 2005, players take on the role of John Raimi, a spectral agent on a mission to stop a nefarious corporation. The game distinguishes itself with a unique possession mechanic, allowing players to haunt and control a variety of human hosts and objects to solve puzzles and combat enemies. This novel gameplay element blends elements of stealth, combat, and strategy as players navigate through the hauntingly atmospheric world of Geist.