I have found this : link: http://www.hackedarcadegames.com/others/plantsvszombies/
Hacks:[]
- press 4 key=no recharge
- press 5 key=spawn award
- press 6 key=free plants
- press z key=spawn regular zombie
- press c key=spawn conehead zombie
- press p key=spawn pole vaulting zombie
- press b key= spawn buckethead zombies
- press n key=spawn newspaper zombie
- press s key=spawn screendoor zombie
- press f key=spawn football (giga) zombie