Collect all of the coins with a baby's face hidden in each of the following Worlds to unlock the advanced version of the corresponding mini-game.
Hard Bouncy Maze: World 3
Hard Egg Toss: World 5
Hard Flutter Challenge: World 2
Hard Speed Eating: World 4
Hard Tulip Shooter: World 1
Enemy is Yoshi's mouth
Get DK if you do not already have him. Swallow an enemy, then climb on a vine and reach out. You should still have the enemy in Yoshi's mouth. However, it is not. When you drop down, realize the enemy will be back in Yoshi's mouth.
Extra levels
Get 100 points on each of the eight stages (except the secret stages) in a World for a total of 800 points. To do this, you must collect 20 red coins, 5 flowers, and 30 stars.
Extra 1 level: Get 800 points for World 1.
Extra 2 level: Get 800 points for World 2.
Extra 3 level: Get 800 points for World 3.
Extra 4 level: Get 800 points for World 4.
Extra 5 level: Get 800 points for World 5.
Feet remains still when flutter jumping
Make Yoshi do the flutter jump. Just when he is doing the flutter jump, press X (or R button if you switched the controls) to make Yoshi aim his eggs. Notice that his feet stay still when they are actually meant to kick around while he is flutter jumping.
In-game reset
Press L + R + Start + Select during game play.
Rotating arrow
You can swallow the rotating arrow in any stage it appears in.
Time Trial mode
Successfully complete the game, then load your cleared saved game file. The question mark that previously appeared un the lower right corner will be replaced with the "Time Trial" option. There are five extra levels (one from each World) in Time Trial mode that are playable with a black Yoshi.