Mini-game
Press Up(2), Down(2), Left, Right, Left, Right, X, Circle during
game play. You can play a shooter mini-game on the in-game map at
the top right corner of the screen. *** This feature is available
in the Japanese version of the game.

Completion bonuses
Win the game and save to unlock Keith as a
playable character, Hard mode, Splatter mode, New Game + mode. Load
your cleared game in New Game + mode to start with all Combo Chips,
Boosters, and stats from you rprevious game.

PS2 Cheats for Nanobreaker

Nanobreaker cheat codes

Nanobreaker cheats