The following are known Action Replay Codes for Full Time Soccer on Nintendo Game Boy / Color (GB / GBC). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

P1 Score 20
91141cde

P1 Score 0
91001cde

P2 Score 20
91141fde

P2 Score 0
91001fde