Here are all of the gameshark codes that I know for Back to Nature. If these codes don't work though, please do not blame it on me.
| Name | Code |
| Maximum Stamina |
|
| Animals can't die |
|
| Red Heart for Karen |
|
| Red Heart for Popuri |
|
| Red Heart for Elli |
|
| Red Heart for Mary |
|
| Red Heart for Ann |
|