This game is also available on SNES.
Retro Game Cheats for Yoshi's Island (Game Boy Advance)
Effect: Gives you extra levels
When:
At the end
How:
Turn off your gba when you see the pitchure of baby mario and luigi, and then go on your completed file and you will see extra levels.
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Effect: Unlock Extra Level 1
When:
Any time
How:
Get up to 800 Points in your World Score in World 1
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Effect: Unlock Extra Level 3
When:
Any time
How:
Get up to 800 Points in your World Score in World 3
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