If you get a 100 points on all levels in a world, you unlock a bonus level. This level will allow you to get extra items and level ups!
Have you seen a rotating arrow? Well, did you know you can EAT it? It will reappear! It doesn't do anything, but strange that you can eat it.
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
Do a flutter jump will with some eggs. Press X to aim your egg, but Yoshi's feet will stay still! They should be moving, shoudn't they? He can't flutter without moving them... hmmm?
Get 700+ points on any world to get a bonus game. There are 5 to get.
Time Attack: Beat the game.
1st secret level on every world: Beat the game.
2nd secret level on every world: Get 800+ points on that world.
First get DK. Sallow a enemy, then go up a vine. You should "look" like you have a enemy, but you don't! Climb down and you won't have a enemy in your mouth!
At the end of each level there is a ring that can have 0 to 5 flowers on it depending on how many flowers you found in the level. When you jump in this ring there will be an imaginary ball that circles around the ring and if it stopped on a flower you would get warped to a bonus stage. There is another way to get one of these 5 bonus levels however and here's how...
Flip Cards - Get a total of 700 points in World 1
Match Cards - Get a total of 700 points in World 3
Roulette - Get a total of 700 points in World 4
Scratch and Match - Get a total of 700 points in World 2
Slot Machine - Get a total of 700 points in World 5