Aaahhh... in the arcades, Gain Ground had a funky vertical monitor setup, and a 3 player configuration (red/blue/yellow versions of the players).
There was an interesting interview years back with the producer, he said only american arcades had the 3 player setup, which is why no home version supports more than 2 players, since all come from Japan (duh). I got the PCE version hoping it would support the three players
PCE version: Better colors, bigger sprites, much better CD music
Genesis version: English release (found mine at EB games last year), faster gameplay, and 2 player.
I almost never have someone around to play games, so I can forgive the PCE version (it is missing 10 of the 60 levels if I remember correctly).
later gamers
-scotty