Gato is a 1984 submarine simulation game for the Apple II, developed by Spectrum HoloByte. Set during World War II, players command a U.S. Gato-class submarine in the Pacific, undertaking missions like patrolling, engaging enemy ships, and surviving depth charge attacks. The game combines strategic navigation, stealth tactics, and real-time action. Praised for its realism and depth at the time, Gato helped establish the submarine sim genre on early home computers.