Win Sumo of Doom-o Everytime:
Before you begin the mini-game, simply hold the Left Analog Stick and C-Stick up. Once you hit your opponent, you'll hit him off on an angle and one more hit should do it.

Faire Square Nighttime Star Price Rig:
One the first turn of night, Twila will b rolling the dice to determine to price of stars. If you want the price to be 5 coins, say "five" into the mic while she is rolling to have a higher probability that the price will be 5.

Verbal Assault - Voice Commands:
Say "Bullet Bills", "Goomba", "Gears" or "Nuts" into the mic.

Shoot Your Mouth - Thwomps:
Say "Zero" into the mic to have thwomps land on your enemies.

Word Herd - Monkeys:
Say "Ukiki" into the mic to have your monkeys throw bananas to stun your enemies.

Mode Select:
At the Mode Select screen, try saying "Fly guy," "Brighton," "Cheep Cheep," "Goomba," and "Twila."

Solo Mode - Better Dice Rolls:
While the dice is rolling, simply say the number, 1-6 into the mic to increase the probability of that number coming up.