Lion King

Cheat mode:
Press B, A, R, R, Y on the options screen. A screen that will allow level selection and invincibility will appear. Switch the "INVUL" option to "On" for invincibility. Once the game has started, pause game play and press B, A(2), B, A(2).

Level skip:
Pause game play, then quickly press B, A(2), B, A(2).