CONTROL THE MAP

While in 1 player vs mode, when the world map is visible, hold select and move the control pad, and you'll be able to move the map to see all of yoshi's destinations

VERY HARD MODE

Go to 1p VS. Mode. 
Select new game. 
Put the cursor on Hard mode. 
Hold Up + L and press A. 
The screen will turn red if you've done this correctly. 

CHANGE CHARACTERS IN 1 PLAYER VS MODE

Begin a 1 player game in VS mode. After winning a match, press and hold the X and Y buttons. You will now be able to play as any character you have defeated.

NO "STOP"

In the beginning of the game, when Yoshi appears on the screen and says "Nintendo!", press B, A, L, L. If you hear a sound then the code was done correctly. Now when you make a Combo or a Chain, the panels continue to rise, it doesn't do a stop. Right when your pieces hit the top, your game's over!

CONTROL TRAINING MODE

In the training sessions, hold R to control the cursor and switch the blocks. 

PLAY AS THE BOSSES

Go to the Player vs. Player character select screen, then hold L + R on both controllers for a few seconds. If you did it right, the question marks (?) at the bottom of the screen will be replaced by bosses.

RESET THE GAME

Press A + B + START + SELECT simultaneously to reset the game