As soon as you start the level, walk left back into the entrance. You will warp to the end of the stage, where some manuevering will get you past the level.
Go to File Select Screen, select Erase Game (should flash), press B, A, R, R, A, L. Now choose a game.
Music Test
Highlight ''Erase game'' and press Down, A,R,B,Y, Down, A,Y, then press Select.
Bad Buddy Code (Free Switching between 2 players)
On game select screen, highlight erase data, press B, A, Down, B, Up, Down, Down, Y and then A.
Practice the bonus rounds
While the intro is playing, press Down, Y, Down, Down, Y.
4/26/2004
Blast through mine cart carnage
Near the begining jump over the cannon and fall next to the wall underneath. You should get blasted out of a cannon and sent in a cart almost all the way to the end of the level.
7/14/2004
Unlimited lives
To make this work you must use a save game.On your last life die as Diddy Kong.Then press start at the "Game Over" screen. When Cranky Kong appears press down,Y,down,down,Y. You will be brought to a room with 3 of each golden animal.You can enter any of these bonus games as often as you like.To exit, just press start, then select. You will be brought back to the last place you died in your save game.
7/29/2005
Infinite Bananas
In Bouncy Bonanza, after you obtain the frog, you will continuously be brought down this small path. If you jump up, you will get three bananas. Now, enter the cave where you got the frog, and you will fall down again. The same three bananas are there! That means you can do this forever and you will get infinite bananas.
Do everything in the game to achieve 101% (Win every level, every bonus level, secret bonus level, defeat final boss).
8/15/2006
Jump in mid-air.
This works in the stage, "Mine Cart Carnage". Hit the Star Barrel in the level, and then either die or pause and press "Select". Enter the stage again. When the Star Barrel explodes, IMMEDIATELY press Y and B simultaneously. You should now be jumping in the air, keep jumping by pressing Y and B in succession. You can use this glitch to jump all the way to the end of the stage.NOTE: Do not backtrack to the beginning, as the glitch will stop functioning when you go back to the start.