You might find StarCraft fun. It's a multiplayer RTS from 1998 for PC. It's not available on Steam and has Mac support, but no Linux support.
user
{"name": "StarCraft", "release_year": "1998", "genres": "real-time strategy", "has_multiplayer": "yes", "platforms": "PC", "available_on_steam": "no", "has_linux_release": "no", "has_mac_release": "yes", "intention": "inform"}
assistant