Here are some cheats and tips for the game Battle Garrega.
Bonus Plans:
At the Title screen, press Up, Up, Down, Down, Left, Right,
Left, Right A, B, C, Start.
Extended Mode (Second Round):
At the Title Screen, press A, Start
Harder Mode:
At the Title Screen, press B, Start.
Special Mode (Hard + Second Round):
At the Title Screen, press A, B, C, Start.