| Code | Effect |
| Crosshair 1 | Gives you crosshairs |
| Fly | Flying mode (D=up C=down) |
| Fov X | Increases peripheral vision (where x is your field of vision) |
| Give #x | gives weapon #x - 3=shotgun, 4=nailgun, etc.. |
| Give C #x | Gives x # cells |
| Give H #x | Gives x # health |
| Give N #x | Gives x # of nails |
| Give S #x | Gives you x # of shells |
| Give R #x | Gives you x # of rockets |
| God | god mode |
| Impulse 9 | All Ite+ms |
| Impulse 10 | Pentagram of Protection |
| Impulse 11 | Rune |
| Impulse 12 | Limited Gimme |
| Impulse 13 | Silver Key |
| Impulse 14 | Gold Key |
| Impulse 252 | Pentagram of Protection (30 seconds) |
| Impulse 253 | Ring of Shadows (30 seconds) |
| Impulse 254 | Bio-suit (30 seconds) |
| Impulse 255 | Quad Damage mode |
| Kill | commit suicide (?) |
| map e#m# | level warp |
| Map End | Takes you to last level |
| _Noclip | walk through walls |
| Notarget | Invisible to enemies |
| R_Fullbright 1 | Everything is bright |
| sv_gravity ### | sets gravity to ### |
| version | Gives you version information |