While playing a game in single player mode, press ' to display the chat window. Then, enter one of the following codes in single player chat to activate the corresponding cheat function:
| Cheat Code | Result |
| teamgod or avatargod | God mode |
| 5fingerdiscount | Full ammo |
| turnpunchkick | 2D players |
| 1-900 | Large torsos when breathing |
| meganoggin | Very big heads |
| bignoggin | Big heads on all characters |
| stumpy | Stumpy characters |
| explore | Toggle victory conditions |
| nobrainer | Disable AI |
| silentbutdeadly | Flatulent walking |
| clodhopper | Large feet and hands |
| debugkeys | Activate debug keys [Note] |
| fastactionresponseteam | Unknown |
Note: Once this code is active, the features in the "Debug commands" section below may be used.
Debug commands
Enable the "Activate debug keys" code and press [F10] to enter debug mode. Then, press one of the following keys to activate the corresponding debug function:
| Key | Result |
| [F2] | Screenshot |
| [F6] | Change view |
| [F7] or [F8] | Commit suicide |
| [F9] | Return to normal view |
| [F12] | Level skip |
| [ or } | Adjust lighting |
| A | Toggle AI |
| V or B | Third person views |
| [Comma], [Period], or / | Adjust elevation |