Jetsons: Invastion of the Planet Pirates

Restore hearts:
Pause game play, then press Up, Right, Down, Left, Select(2). George Jetson will grunt to confirm correct code entry. Note: This code may only be enabled once per screen.

Nine lives:
Pause game play, then press X, A, Y, B, L, R, Right, Down

Increased power:
Pause game play, then press Right, Down, Up, Select, B, L, Left, Right

Change watermelon to other items:
Pause game play, then press L, Select, R, Up, Down, Y, A, Select. Press Select during game play to change the watermelon to other items such as a skull, computer, etc.

Level select:
Enter the "Options" menu, then hold the D-pad in any direction for five seconds. Note: This has no effect under the Easy difficulty setting.