Me and my brother-in-law used to play Formula 1 Gran Prix on my old A500. I think it did have the ability to race over modem or serial connection, but didn't have anyone close by to paly that way. The game did have multiplayer mode on a single machine, but in this multiplayer mode, one player would race a few laps, then the computer would take over player 1's car, and player 2 could race. It wasn't the same as racing realtime at the same time, but it was good enough to entertain us for hours.