Spasim is a 32-player 3D networked space flight simulation game and first-person space shooter developed by Jim Bowery for the PLATO computer network and released in March 1974. The game features four teams of eight players, each controlling a planetary system, where each player controls a spaceship in 3D space in first-person view. Two versions of the game were released: in the first, gameplay is limited to flight and space combat, and in the second systems of resource management and strategy were added as players cooperate or compete to reach a distant planet with extensive resources while managing their own systems to prevent destructive revolts. Although Maze is believed to be the earliest 3D game and first-person shooter as it had shooting and multiplayer by fall 1973, Spasim has previously been considered along with it to be one of the "joint ancestors" of the first-person shooter genre, due to earlier uncertainty over Maze's development timeline.