Open Steam, go to your "Play Games" menu, and select Half-Life 2: Episode One.
Right click on it and select "Properties". Click the "Launch Options" button then type -console. Click "Ok", then close.
Double click "Half-Life 2: Episode One" to start the game. Once it is loaded and you are playing, press ~ to display the console window. Then, enter sv_cheats 1 and press [Enter] to enable cheat mode.
You can now enter the following codes at the console window. Also, any code can be used as a command line parameter by prefixing it with the "-" character. Note: For games that were downloaded from Steam, to use cheats in single player mode, start the game with the -applaunch -dev -tconsole command line parameter.
| Code: | Result: |
| impulse 101 | All weapons |
| hurtme <amount> | Damage player |
| showtriggers_toggle | Draw game triggers. |
| mat_normalmaps 1 | Draw normal maps. |
| mat_normals 1 | Draw surface materials. |
| god | God mode (server only) |
| notarget | Ignored by NPCs |
| npc_kill | Kills all npc’s in the area. |
| maps | List maps |
| map <map name> | Load indicated map |
| buddha | Reduce your health |
| sk_plr_dmg_357 <number> | Set damage value for .357 Magnum |
| sk_plr_dmg_crossbow <number> | Set damage value for crossbow |
| sk_plr_dmg_crowbar <number> | Set damage value for crowbar |
| sk_plr_dmg_grenade <number> | Set damage value for grenades |
| sk_plr_dmg_pistol <number> | Set damage value for pistol |
| sk_plr_dmg_ar2 <number> | Set damage value for Pulse Rifle |
| sk_plr_dmg_rpg_round <number> | Set damage value for RPG rockets |
| sk_plr_dmg_buckshot <number> | Set damage value for shotgun |
| sk_plr_dmg_smg1_grenade <number> | Set damage value for SMG grenades |
| sk_plr_dmg_smg1 <number> | Set damage value for submachine gun |
| sk_max_357 <number> | Set max ammo for .357 Magnum |
| sk_max_crossbow <number> | Set max ammo for crossbow |
| sk_max_grenade <number> | Set max ammo for hand grenades |
| sk_max_pistol <number> | Set max ammo for pistol |
| sk_max_ar2 <number> | Set max ammo for Pulse Rifle |
| sk_max_ar2_altfire <number> | Set max ammo for Pulse Rifle energy orbs |
| sk_max_rpg_round <number> | Set max ammo for RPG |
| sk_max_buckshot <number> | Set max ammo for shotgun |
| sk_max_smg1_grenade <number> | Set max ammo for SMG grenades |
| sk_max_smg1 <number> | Set max ammo for submachine gun |
| ch_createjeep | Spawn a scout car. |
| impulse 83 | Spawn an airboat. |
| ch_createairboat | Spawn an airboat. |
| give <item name> | Spawn indicated item |
| npc_create <name> | Spawn indicated NPC |
| mat_fastnobump 0 | Turn off bump mapping. |
| noclip | Walk through objects (server only) |
| mat_wireframe1 | Wire frame models. |
Use one of the following entries with the map code.
| Code: | Result: |
| ep1_c17_00 | Spawns you at the beginning of Chapter 3 |
| ep1_c17_01 | Spawns you at the beginning of Chapter 4 |
| ep1_c17_02 | Spawns you in Chapter 4 City 17 after the first load point. |
| ep1_c17_02a | Spawns you in Chapter 4 City 17 after the second load point. |
| ep1_c17_02b | Spawns you in Chapter 4 City 17 after the third load point. |
| ep1_c17_00a | Spawns you in City 17 after the first load point. |
| ep1_citadel_01 | Spawns you in the Citadel after the first load point. |
| ep1_citadel_02 | Spawns you in the Citadel after the second load point. |
| ep1_citadel_03 | Spawns you in the Citadel after the third load point. |
| ep1_citadel_02b | Spawns you in the Citadel before the lift ride. |
| ep1_c17_06 | Spawns you in the last Chapter near the end. |
| ep1_c17_05 | Spawns you in the last Chapter. |
| ep1_citadel_04 | Spawns you near the end of the Citadel. |
| credits | Starts you at the credits. |
| ep1_citadel_00 | Starts you at the intro of the game. |
Use one of the following entries with the npc_create code.
| Code: | Result: |
| barnacle | Spawns a barnacle. |
| turret_ceiling | Spawns a Ceiling Turret. |
| citizen | Spawns a City 17 Citizen. |
| combinedropship | Spawns a Combine Dropship |
| helicopter | Spawns a Combine Helicopter |
| metropolice | Spawns a Combine Metrocop |
| cscanner | Spawns a Combine Scanner. |
| combine_s | Spawns a Combine Soldier. |
| crabsynth | Spawns a Crab Synth |
| crow | Spawns a Crow |
| headcrab_fast | Spawns a Fast Headcrab |
| fastzombie | Spawns a Fast Zombie. |
| turret_floor | Spawns a Floor Turret. |
| launcher | Spawns a Headcrab Launcher |
| headcrab | Spawns a Headcrab. |
| ichthyosaur | Spawns a Ichthyosaur. |
| manhack | Spawns a Manhack |
| mortarsynth | Spawns a Mortar Synth |
| pigeon | Spawns a Pigeon. |
| headcrab_poison | Spawns a Poison Headcrab |
| headcrab_black | Spawns a Poison Headcrab |
| poisonzombie | Spawns a Poison Zombie. |
| rollermine | Spawns a Rollermine. |
| seagull | Spawns a Seagull |
| stalker | Spawns a Stalker. |
| strider | Spawns a Strider. |
| vortigaunt | Spawns a Vortigaunt. |
| zombie_torso | Spawns a Zombie without legs. |
| zombie | Spawns a Zombie. |
| zombine | Spawns a Zombine (Combine Zombie) |
| alyx | Spawns Alyx. |
| antlionguard | Spawns an Antlion Guard. |
| antlion | Spawns an Antlion. |
| barney | Spawns Barney. |
| breen | Spawns Breen. |
| combinegunship | Spawns Combine Gunship |
| dog | Spawns Dog. |
| eli | Spawns Eli |
| monk | Spawns Father Gregori |
| gman | Spawns Gman |
| kleiner | Spawns Kleiner |
| mossman | Spawns Mossman |
Successfully complete the game. Start a new game and choose a level to get an option to play it with an audio commentary track.
