PSP | Submitted by mafiota95N+ Atari bonus levels
Highlight Episode 0 in Single Player mode then press Up to access the new levels in Episodes 45 to 49.
DS, PSP | Submitted by Ninjitsu NedUnlockable Stuff
Blue ninja - Complete episode 02
Gold Ninja - Beat all 45 Episodes
Green ninja - Complete episode 03
Red ninja - Complete episode 01
Victory Dance 01 - Complete episode 01
DS, PSP | Submitted by Ninjitsu NedMusic 2
Music 2 - Collect 20,000 gold.
DS | Submitted by Snop CatAtari Bonus Level
Go to the unlockables menu and hold L and R and hit A, B, A, B, A, A, B to unlocks the Atari Bonus Levels.
PSP | Submitted by gengokuAtari Bonus Level
The unlockables menu.
Go to the unlockables screen, hold down L and R and press X, Circle, X, Circle, X, X, Circle.