Hint :
Bowser Land:
To get Bowser Land, you must complete every other board with any character and have a superstar on each.

Mini-game land extras:
Purchase half the mini-games from Woody in Mini-game land to receive the mini-game arena. Beat Bowser land for more arena modes. Also, purchase all the mini-games from Woody to get the mini-game coaster.

Mini-game coaster mode:
To get the mini-game coaster, just purchase all of the mini games. This mode allows you to play all of the mini-games in an adventure. All together, there are nine worlds.

Purchase item mini-games and battle mini games:
Successfully complete the mini-game coaster under the normal difficulty setting to get the ability to purchase item and battle mini-games. Complete it under the hard difficulty setting for battle games.

Credits machine:
To get the credits machine, successfully complete the game on every course, including Bowser Land, then visit the options laboratory.

Shock, Drop, or Roll:
On the 1 vs. 3 game, Shock, Drop Or Roll, have the player that is the switch person press Forward and then Back to make the other players fall off. Note: This trick works best with Donkey Kong and Yoshi.

Taunt other players:
Press L to do your character's taunt when it is someone else's turn.