Go! Go! Kokopolo Cheats for Nintendo DS
Don't kill the flower enemy in the first level, instead remain idle for about five minutes to unlock the secret ending.
To unlock Expert Mode aka Go! Go! MechJinbe, simply beat the game on Normal difficulty.
The Expert mode features mirrored levels and a new character, MechJinbe. The game only saves after beating a whole world, and a limited time for each world that goes up and down depending on how well you are playing.
To unlock a vest and a hat, you must scratch 300 butterflies on the start screen.