Load the game with the "hl.exe -dev -console" command line. Then while playing the game, press ~ to display the console and type "sv_cheats 1" to enable cheat mode. Press ~ and enter one of the following codes to activate the corresponding cheat function:
| Result | Cheat Code |
| God mode | /god |
| All weapons with full ammo | /impulse 101 |
| No clipping mode | /noclip |
| Obtain item | /give [item name] |
| Map select | /map [map name] |
-Some codes from: WiLdCaTz7@aol.com
Use the following values with the "/give [item name]" code:
- item_airtank
- item_antidote
- item_battery
- item_healthkit
- item_longjump
- item_security
- item_sodacan
- item_suit
- ammo_357
- ammo_9mmAR
- ammo_9mmbox
- ammo_9mmclip
- ammo_ARgrenades
- ammo_buckshot
- ammo_crossbow
- ammo_egonclip
- ammo_gaussclip
- ammo_glockclip
- ammo_mp5clip
- ammo_mp5grenades
- ammo_rpgclip
- weapon_357
- weapon_9mmAR
- weapon_9mmhandgun
- weapon_crossbow
- weapon_crowbar
- weapon_egon
- weapon_gauss
- weapon_glock
- weapon_handgrenade
- weapon_hornetgun
- weapon_mp5
- weapon_python
- weapon_quantumdestabilizer
- weapon_rpg
- weapon_satchel
- weapon_shotgun
- weapon_snark
- weapon_tripmine
Use the following map names with the "/map [map name]" code:
Single player
- c0a0
- c0a0a
- c0a0b
- c0a0c
- c0a0d
- c0a0e
- c1a0
- c1a0a
- c1a0b
- c1a0c
- c1a0d
- c1a0e
- c1a1
- c1a1a
- c1a1b
- c1a1c
- c1a1d
- c1a1f
- c1a2
- c1a2a
- c1a2b
- c1a2c
- c1a2d
- c1a3
- c1a3a
- c1a3b
- c1a3c
- c1a3d
- c1a4
- c1a4b
- c1a4d
- c1a4e
- c1a4f
- c1a4g
- c1a4i
- c1a4j
- c1a4k
- c2a1
- c2a1a
- c2a1b
- c2a2
- c2a2a
- c2a2b1
- c2a2b2
- c2a2c
- c2a2d
- c2a2e
- c2a2f
- c2a2g
- c2a2h
- c2a3
- c2a3a
- c2a3b
- c2a3c
- c2a3d
- c2a3e
- c2a4
- c2a4a
- c2a4b
- c2a4c
- c2a4d
- c2a4e
- c2a4f
- c2a4g
- c2a5
- c2a5a
- c2a5b
- c2a5c
- c2a5d
- c2a5e
- c2a5f
- c2a5g
- c2a5w
- c2a5x
- c3a1
- c3a1a
- c3a1b
- c3a2
- c3a2a
- c3a2b
- c3a2c
- c3a2d
- c3a2e
- c3a2f
- c4a1
- c4a1a
- c4a1b
- c4a1c
- c4a1d
- c4a1e
- c4a1f
- c4a2
- c4a2a
- c4a2b
- c4a3
- c5a1
