The Thing That Happened is an open world, third-person survival adventure game set in a harsh post apocalyptic world. You play as Marcus Draven, the only survivor who finds himself in the ruined city of Jericho a ghost city filled with crumbling buildings, overgrown with vegetation and full of remnants of a lost civilization. In the game, special attention is paid to collecting resources, creating equipment and using a variety of weapons with nozzles to fight enemies.