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Nintendo DS - Bust-A-Move DS cheats

Unlock Dark World
When you finished all the "A" worlds in the light world with DEV 
enter the next code at tat title screen: Press A, Left, Right, A

Unlock Sound Test 
Go to main menu. Press Select, A, B, Left, Right, A, Select, Right 

Get the Evil Sorcerer
After you solved all 50 A puzzles, the game gave you the code to visit 
"Another World" and the evil sorcerer unlocked.

In Puzzle Mode, Select 1-A, after 2-A, all the way to 5-A. 
After complete the last puzzle in 5-A, you'll get cheat code and the 
ending credits. After restart you DS and you will be able to play, as 
the Evil Sorcerer.

Unlock Chakkun 
Solve Puzzle Set Z, after finish Puzzle Mode in DS Style

Bonus Puzzle sets 
Reach a high score for every default puzzle sets