Play - online

If you’ve ever dreamed of commanding a submarine in the middle of the Cold War but didn’t want to deal with actual torpedoes, GATO is your safe harbor. Released in 1984, this sim drops you into the Pacific with a blinking DOS interface that screams “hope you brought the manual.” You’ll juggle sonar pings, evasive maneuvers, and the constant paranoia that your crew is secretly plotting mutiny because you forgot to surface for air. Don’t expect fireworks—expect spreadsheets in motion. But if the idea of hunting enemy vessels while praying you don’t run out of fuel excites you, this one’s a surprisingly tense classic.