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. When playing, press ~ to display the console window. Type "sv_cheats 1" and press [Enter] to enable cheat mode. Now, enter one of the following codes to activate the specified cheat function. Also, any code can be used as a command line parameter by prefixing it with the "-" character. *** 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.

Result	Cheat Code
God mode (server only)	god
All weapons	impulse 101
Spawn listed item	give [item name]
Reduce your health	buddha
Damage player	hurtme[amount ]
Ignored by NPCs	notarget
Walk through objects (server only)	noclip
List maps	maps
Load listed map	map[map name]
Spawn listed NPC	npc_create[name]
Set max ammo for .357 Magnum	sk_max_357[number]
Set max ammo for Pulse Rifle	sk_max_ar2[number]
Set max ammo for Pulse Rifle energy orbs	sk_max_ar2_altfire[number]
Set max ammo for shotgun	sk_max_buckshot[number]
Set max ammo for crossbow	sk_max_crossbow[number]
Set max ammo for hand grenades	sk_max_grenade[number]
Set max ammo for pistol	sk_max_pistol[number]
Set max ammo for RPG	sk_max_rpg_round[number]
Set max ammo for submachine gun	sk_max_smg1[number]
Set max ammo for SMG grenades	sk_max_smg1_grenade[number]
Set damage value for pistol	sk_plr_dmg_pistol[number]
Set damage value for .357 Magnum	sk_plr_dmg_357[number]
Set damage value for Pulse Rifle	sk_plr_dmg_ar2[number]
Set damage value for shotgun	sk_plr_dmg_buckshot[number]
Set damage value for crossbow	sk_plr_dmg_crossbow[number]
Set damage value for crowbar	sk_plr_dmg_crowbar[number]
Set damage value for grenades	sk_plr_dmg_grenade[number]
Set damage value for RPG rockets	sk_plr_dmg_rpg_round[number]
Set damage value for submachine gun	sk_plr_dmg_smg1[number]
Set damage value for SMG grenades	sk_plr_dmg_smg1_grenade[number]