And So The Adventure Begins: Extra lives
When you run low on lives, return to the first level (And So The Adventure Begins). When you start, go to where the bee is located and jump to the floating platform furthest from the well with the Gobbo on top. Keep on Stomping (or double-jumping) on it until it will not let you jump any more. The game will proceed to a secret level with no monsters. Exit by going to the stars on the ground, and then finish level 1.
Invincible falls
Pause the game as Croc yells while falling. Press Select and choose the "Quit" option. Then, select the "No" option. Press Down at the quit game screen so neither the "Continue" or "Quit" options are selected. Press X and restart the current level without losing a life.
Leap Of Faith: Hidden area
You will find a small block in the level. After that, you will see a bigger block that disappears. The game will proceed to a secret area that has four Smash Boxes containing hearts. Keep in mind the wind will blow you into poison pits.
Tumbling Dantini: Jester Dantini
Go to The Tumbling Dantini level. You will immediately encounter a green and orange Dantini. Pause game play, and you can make out that the green is a green costume and he appears to be wearing a jester hat. He is only found on this level.
Warp to end of game
Enter this password to warp to the end of the game: Left,Left,Left,Left,Down,Right,Right,Left,Left,Down,Left,Up,Right.