• Access Any Level

    You must first enable the ''console'' (see elsewhere on the codes list), then in the game, open the console and type ''map x''. x represents the name of the level as listed below; for instance, type ''map c0a0'' for the first level.

    A lot of the time you won't begin in the place you would if you accessed the map normally. You will sometimes need to use the No Clipping Mode to move out of the start positions.

    ''Forget About Freeman!''c3a1, c3a1a, c3a1b
    ''We've Got Hostiles''c1a3, c1a3a, c1a3b, c1a3c, c1a3d
    Anomalous Materialsc1a0, c1a0a, c1a0b, c1a0d, c1a0e
    Apprehensionc2a3, c2a3a, c2a3b, c2a3c, c2a3d, c2a3e
    Black Mesa Inboundc0a0, c0a0a, c0a0b, c0a0c, c0a0d, c0a0e
    Blast Pitc1a4, c1a4b, c1a4d, c1a4f, c1a4g, c1a4i, c1a4j, c1a4k
    Gonarch's Lairc4a2, c4a2a, c4a2b
    Interloperc4a1a, c4a1b, c4a1c, c4a1d, c4a1e, c4a1f
    Lambda Corec3a2e, c3a2, c3a2a, c3a2b, c3a2c, c3a2d, c3a2f
    Office Complexc1a2, c1a2a, c1a2b, c1a2c, c1a2d
    On a Railc2a2, c2a2a, c2a2b1, c2a2b2, c2a2c, c2a2d, c2a2e, c2a2f, c2a2g, c2a2h
    Power Upc2a1, c2a1a, c2a1b
    Questionable Ethicsc2a4d, c2a4e, c2a4f, c2a4g
    Residue Processingc2a4, c2a4a, c2a4b, c2a4c
    Surface Tensionc2a5, c2a5a, c2a5b, c2a5c, c2a5d, c2a5e, c2a5f, c2a5g, c2a5w, c2a5x
    Unforeseen Consequencesc1a0c, c1a1, c1a1a, c1a1b, c1a1c, c1a1d

    Contributed By: Hammerite Heretic.

    30    24

  • Console Codes

    First, enable the console. Then, type the proper code into it to get the desired effect.

    17 ammo for the glock pistol.give ammo_9mmclip
    Ammo for the 357 magnum.give ammo_357
    Ammo for the glock pistol.give ammo_9mmbox
    Crossbow ammo.give ammo_crossbow
    Delete Targeted Enemyimpulse 203
    Eliminate Shadowsr_fullbright 1 (Replace 1 with 0 to turn them back on.)
    Gives you a 357 Magnumgive weapon_python
    Gives you ammo for the Egongive ammo_Egonclip
    Gives you ammo for the Gaussgive ammo_Gaussclip
    Gives you ammo for the MP5give ammo_9mmAR
    Gives you ammo for the RPGgive ammo_RPGclip
    Gives you some hand grenades.give weapon_handgrenade
    Gives you some health.give item_healthkit
    Gives you some laser tripmines.give weapon_tripmine
    Gives you some snarks.give weapon_snark
    Gives you the 357 Magnum.give weapon_357
    Gives you the crossbow.give weapon_crossbow
    Gives you the crowbar.give weapon_crowbar
    Gives you the glock pistol.give weapon_9mmhandgun
    Gives you the guass rifle.give weapon_gauss
    Gives you the HEV suit.give item_suit
    Gives you the hornet gun.give weapon_hornetgun
    Gives you the MP5.give weapon_mp5
    Gives you the rocket launcher.give weapon_rpg
    Gives you the secondary ammo for the MP5give ammo_ARgrenades
    Gives you the shotgun.give weapon_shotgun
    Instant Weapons, Ammo, and Armorimpulse 101
    Mp5 grenade ammo.give ammo_mp5grenades
    Set Gravity Levelsv_gravity # (Lower numbers gives less gravity, higher gives more. Normal is 800.)
    Shotgun ammo.give ammo_buckshot
    Spawn Gibsimpulse 102
    Spawn Marinesimpulse 76
    Third Personchase_active 1
    Third Person Viewthirdperson
    Walk Through Wallsnoclip

  • Impulse Codes

    After activating the conlse, press tide (~) and enter the following.

    Control onscreen monsters. This code may not work in versions of the game.impulse 109
    Creates a human grunt. Be careful, this can crash the game.impulse 76
    Creates blood infront of you, like spray paint.impusle 202
    Deletes target NPC or monster from the game.impulse 203
    Displays AI node informationimpulse 195
    Enemies can't hear youimpulse 105
    Get all weapons and armor. Enter again for more amo and/or armor.impulse 101
    Lists global entitiesimpulse 104
    Spawn gibs.impulse 102
    While looking at amonster, displays stats.impulse 103
    While looking at an object, displays model/sprite stats.impulse 106
    While looking at an object, displays the texture name.impulse 107

    Contributed By: fishboy101.

    29    29

  • Items from the console

    Go to the start menu, then go to all programs, then go to accessesories, then click on command prompt. Select you Half-Life directory and type hl.exe -console then Half-Life should open. Start a new game then press the ` (tilde) key then type in these codes:

    357 magnum ammogive ammo_357
    Gives you a MP5give weapon_mp5
    Gives you a 357 Magnumgive weapon_python
    Gives you a Crossbowgive weapon_crossbow
    Gives you a Crowbargive weapon_crowbar
    Gives you a Glock pistol clipgive ammo_glockclip
    Gives you a Guass Riflegive weapon_gauss
    Gives you a HEV Suit Battery (+15 armor)give item_battery
    Gives you a Hornet Gungive weapon_hornetgun
    Gives you a Laser Trip Minegive weapon_tripmine
    Gives you a Pistolgive weapon_9mmhandgun
    Gives you a Rocket Launchergive weapon_rpg
    Gives you a Satchel Chargegive weapon_satchel
    Gives you a Shotgungive weapon_shotgun
    Gives you Crossbow ammoammo_crossbow
    Gives you some Hand Grenadesgive weapon_handgrenade
    Gives you some MP5 Grenadesgive ammo_mp5grenades
    Gives you the egon!give weapon_egon
    Gives you the Long Jump Modulegive item_longjump
    Gves you a Rocketgive ammo_rpgclip
    Healthgive item_healthkit
    HEV Suitgive item_suit
    Pistol clipgive ammo_9mmclip

    Contributed By: strongbad1234, sb_100, and SuperSonicWind.

    21    18

  • Super Jump

    You go to console and you have to type
    X=any number,0-999
    sv_gravity X
    You should have only one space after gravity and before the number
    It shoud look like this
    sv_gravity 111

    The normal jumpsv_gravity 800
    You are now the mastersv_gravity 0-999
    You can float and walk in air for amount of time.Highest jumpsv_gravity 0
    You can't jump at allsv_gravity 999

    Contributed By: RapCloudStrife.

    18    11


  • Artificial staircase (1)

    Put Trip Mines onto a wall in form of a small staircase. You can actually jump on them and even use them to reach places you're not supposed to reach just yet or even places that aren't supposed to ever be reached like roofs that can be used as shortcuts.

    Contributed By: KeeperBvK.

    9    5

  • Artificial staircase (2)

    Use a Snark (a bug) when facing a wall and jump onto it. Directly throw another one and repeat until you've reached the height you wanted to reach. This way you are able to reach places you're not supposed to reach just yet or even places that aren't supposed to ever be reached like roofs that can be used as shortcuts.

    Contributed By: KeeperBvK.

    4    4

  • Gauss Cannon-Jump

    A technique used in a lot of Ego-Shooters is the Rocket-Jump where you point a Rocket Launcher at the ground and fire off a rocket while jumping to be able to jump way higher than usually. The downside is that you lose health by doing this and since a rocket in Half-Life takes away lots of health it wouldn't really be of good use.
    Instead you can exploit another possibility in Half-Life: Using the secondary fire mode of the Gauss Cannon instead of the rocket launcher will also launch you high into the air but will not directly deal any damage (only eventual falling damage).

    Contributed By: KeeperBvK.

    6    3

Easter Eggs

  • See a picture of one of the game developers

    During the mission 'On A Rail' (the part of the game where you have to stop the rockets from firing and your in the sewers or something on a trolley). Turn on 'noclip' and float towards the top of the rocket. once you get to the top you can see a pic of a developer of the game. its his face tiled about 50 times on a square. there is a ladder at the top that brings you up another level with the same pic.

    P.S - this Easter Egg is only reachable using 'noclip'. there is no other way to get up that high

    Contributed By: ZOLTRIX.

    8    2


  • Console Mode - Game of the Year

    Instead of ''C:SIERRAHalf-Lifehl.exe -console''


    ''C:SIERRAHalf-Lifehl.exe -dev -console''

    Otherwise the impulse cheats don't work.

    Contributed By: Togechikku64.

    13    3

  • Enable the Console

    In order to enable your console, (cheat box, basically) right click on the half life shortcut. Go down to properties. A box should open up with the properties. Go to the target tab. The line should look something like this: X:\Sierra\Half-Life\hl.exe . At the end of that put -console . Now it should look like X:\Sierra\Half-Life\hl.exe -console . Make sure that you are only using one space. Now, go back into Half Life. The main startup screen should have an extra selection that says console. Here you can enter cheats, see what's loading, and even kick people if you are on a server.

    Contributed By: trev913.

    9    8

Know Something We Don't?

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Have We Been Fooled?

You can submit a problem report for any non-working or fake code in the lists above.