All Working Yoshi's Island DS Cheats - DS

Character Coins Bonus
In the game there is a coin with one of the baby's faces on it in each level and if you manage to find all of the coins in each world you unlock the harder version of a minigame in the minigames menu!

Bouncy Maze (Hard) - Get all character coins in World 3
Egg Toss (Hard) - Get all character coins in World 5
Flutter Challenge (Hard) - Get all character coins in World 2
Speed Eating (Hard) - Get all character coins in World 4
Tulip Shooter (Hard) - Get all character coins in World 1

New characters
You can get four new babies to ride on yoshi. They are baby peach, baby DK, baby Wario, and baby Bowser. Peach is unlocked at world 1-5, Dk at 2-1, Wario at3-5, and Bowser at 4-5. (note- Baby Wario and Baby Bowser will not remain with you forever, but peach and dk will.

Baby Bowser - World 4-5
Baby DK - World 2-1
Baby Peach - World 1-5
Baby Wario - World 3-5

Unlock Extra levels
To unlock the extra levels you will need to collect a 100 points on 8 stages (Except secret levels) of that world. Meaning you must get 20 red coins, 5 flowers and 30 stars to get 100 points. All together 800 points:

Extra 1 - Get 800 points for world 1
Extra 2 - Get 800 points for world 2
Extra 3 - Get 800 points for world 3
Extra 4 - Get 800 points for world 4
Extra 5 - Get 800 points for world 5