Party games:
It takes 2,500 play points to unlock a party game. The best way to rack up quick points is to play challenge mode. Play the Beginner level a few times without continuing to earn extra stages that will help your score skyrocket.

Bonus levels:
Select the beginner difficulty setting and complete all ten levels in World 1 without using any continues to unlock 10 bonus beginner levels. Select the advanced difficulty setting and complete all thirty levels in Worlds 2 through 4 without using any continues to unlock 10 bonus advanced levels. Select the expert difficulty setting and complete all fifty levels in Worlds 5 through 10 without using any continues to unlock 10 bonus expert levels.

Master difficulty setting:
Select the expert difficulty setting and complete all fifty levels in Worlds 5 through 10 and the ten bonus expert levels without using any continues.

Alternate music:
Unlock all mini-games to change the music that is heard at the main menu.

Monkey Baseball: Easy strikeouts:
It is easy to strike out the batter if you move all the way to the opposite side of the pitcher. Throw it as fast as you can. The batter will hit it, but it will go backwards. After there are two strikes, do the same thing, only this time slow down just before the plate. The batter will swing and miss. This requires practice.

Master bonus levels:
Complete all ten master mode levels without using any continues.

Extra level 7: Easy completion:
Go fast and use the side to complete the level. Also, there is a mini-game at the end where you have to collect all the bananas. The big banana gives you 10 bananas and the star makes you untouchable for 10 seconds.

Hidden picture:
When you are playing the level where you have to jump in the spinning thing, once you get in you will see a picture of Aiai on the wall.

Dog Fight Glitch
In Monkey Dog Fight go into the last level. In the bottom of this level there are cracks. Go into one of the deeper cracks and fly in it toward the speeker. When you get to the end you should go through the wall into a black area. This area is outside the level. From here you can turn around and go back into the level. You can also shoot misiles at your opponents, but they can't hit you.