International Superstar Soccer '99 - Cheat Codes
Below are the cheat codes, hints and help for International Superstar Soccer '99 - Cheat Codes.
Note: You must have a 2.1 or higher version of the Game Shark to use these codes in a Game Boy Color system.
| Team 1 Score Modifier | 01??00C1 |
| Team 2 Score Modifier | 01??08C1 |
