Annulus is a single-player adventure, turn-based strategy, action, casual, puzzle, platformer, role-playing, shooter, and strategy game in which players explore a dark space station, navigating its corridors and battling against the encroaching darkness. In this game, players arrive on the Annulus, a space station designed to extract power from their home world, and must uncover its true purpose while managing the station's power and fighting twisted machines. It stands out with its unique theme of horror and darkness, requiring players to reroute power to light their way, solve intricate puzzles, and acquire new abilities to delve deeper into the ship's mysteries, blending multiple gameplay elements for a comprehensive experience.