SNES: Codes For:Zero: The Kamikaze SquirrelZero: The Kamikaze Squirrel   

Infinite Stars: 
At any point, pause the game and pause then press D, A, and B. 
Infinite Lives: 
At any point, pause the game and pause then press B, A, B, B, and Y. 
Infinite Energy: 
At any point, pause the game and pause then press B, U, B, B, and A.