Mexico '86 Cheats

All-Stars team:
Hold Start for eight seconds at the title screen and release. Hold Start again eight seconds and release. Hold Start again a third time for eight seconds and release. You will hear a sound if you have entered the code correctly. Insert your coin(s) and highlight Argentina at the team selection screen. Hold Start and select Argentina to Unlock the All-Star team.

Black ball:
Hold Start for about four seconds, release it, then hold it again for another four seconds during a match. When released, the screen will flash and the ball will turn black.