International Superstar Soccer '99 for Game Boy Unlockables

This page contains ALL the unlockables we know of for International Superstar Soccer '99 for Game Boy. Please DO NOT contact us asking for additional International Superstar Soccer '99 unlockables. As soon as we discover any new unlockable, we publish it here immediately. If you have a International Superstar Soccer '99 for Game Boy unlockable that is not listed here, please submit it.

No unlockables available for this game yet. If you have one, submit it! If you would like to be notified when we add unlockables for this game, add it to your Game List.

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