Enter B9RBRN as a name. Use the other codes to unlock mini-games.

Code - Effect

9MA268 - Gali Mini-Game
V33673 - Kopaka Mini-Game
3LT154 - Lewa Mini-Game
B9RBRN - Master Code
8MR472 - Onua Mini-Game
5MG834 - Pohatu Mini-Game
4CR487 - Tahu Mini-Game