SNES: Codes For:Zombies Ate My NeighborsZombies Ate My Neighbors  

Starting Bonus Level: 
Enter the password "BCDF" to begin in a bonus level that gives you a 1-up and 
the "Martian Bubble Blaster". When you exit the level you will be at Level 1. 
Level Passwords: 
XHRS - Level  5 
NBGW - Level  9 
BFCB - Level 13 
FKYQ - Level 17 
DXBR - Level 21 
PYLQ - Level 25 
GYLM - Level 25 Bonus 
YLZD - Level 29 
LJQJ - Level 33 
FZVM - Level 37 
FRPJ - Level 41 
BLHR - Level 45 
XQJR - Credits Level