If you want to talk simultaneous execution games, the original computerized version is probably RoboSport, a 1991 Maxis game. The mechanic is deep enough that

If you want to talk simultaneous execution games, the original computerized version is probably RoboSport, a 1991 Maxis game. The mechanic is deep enough that it can still be fun to play a few rounds with a friend, despite the utter simplicity of the game.