Kao the Kangaroo Cheats...
Extra checkpoint
Display the map. From there hold L + R and press Up, Right, Down, Left, A.
Extra Glove
Enter the map screen while playing a game and then hold L + R and press Down, Right, Left, Down, A.
Extra life
Display the map. From there hold L + R and press Down, A, Up, Left, A.
Infinite checkpoints
Display the map. From there hold L + R and press Up, Right, Down, Right, Left, A.
Infinite Gloves
Display the map. Hold L + R and press Down, Right, Up, Right, Left, B. You will be granted infinite gloves.
Infinite health
Display the map. From there hold L + R and press Down, B twice, A, Up, Left, Right.
Infinite Lives
Display the map. Then hold L + R and press Down, Left, B, Left, B two times. You will be granted infinite lives.
Level Select
Display the map. Hold L + R and press Up, Down, Right, Left, Up, X. You will be granted the option to select a level.
Level skip
Display the map. From there hold L + R and press Up twice, Left, Down, X.