Half-Life²:SUBSTANCE GOLD gives your single player games harder challenges and hectic action: 4 gamemodes to test your skills with, a wide array of weapons and 5 different player classes to best suit your gaming style. Welcome to the real Substance, what action is made of!


- New single player campaign modes: European Extreme,Gordon Tales and Survivor. Aka legendary difficult,more battles and health management: Survivor gives you shields like in Halo and takes away most of the health packs making life leeching necessary - an error too many done in the canals could prove fatal only in the citadel;

- Gameplay additions: bullet time + fast reload as in Max Payne 2, gruesome new gibbing system,friendly fire,open wounds, Critical Hit System as in Shogo (score headshots,win health!), the weapons' weight affect your walk speed, fast Punch button, crosshair disappears if you don't slow down, alternate firemodes, allies spawning, enemy conversions, incendiary/dark energy shells, kill striders with normal guns and meet bullsquids, houndeyes, assassins and stalkers;

- The lost Raising the Bar HL2 intro recreated by MedicDance and Smanu85;

- Get acquainted with the new game features in the revised VR Training map or enjoy the Substance comics by artist LKL;

- The HEV FORMS class system,press tab and select your personality among the following:

[GORDON FREEMAN] is a scientist and knows how to play defensively while exploiting his enemies' advanced technology to build friendly units and nasty traps.
Abilities: HEV Shield and flashlight
Weapons: punch,crowbar,stunstick+manhack,pistol,mp5+grenade (employs hand grenades),dual combine ball launcher,jackhammer+turrett,bugbait+antlion,berserk ggun (turns super if you use it for a while),explosive-stuffed proximity headcrab (kill headcrabs,win ammo),covenant grenade,quad free fire rpg;

[LIQUID SNAKE] is the terrorist leader of fox-hound and his specialties are mass killings and stylish matrixesque executions with any kind of weapon or even bare-handed fights.
Abilities: Killing Spree,HEV Knuckles,super throw (splash enemies with crates or barrels),extended bullet time
Weapons: punch,tazer,stunstick+manhack,desert eagle,AK47,HK23,Vulcan minicannon,super shotgun 1/2/4 ammo,cluster incendiary grenade,quad free fire rpg,bugbait+antlion,berserk ggun;

[SOLID SNAKE] is a talented spy who relies on his stealth camouflage to evade capture or to approach and kill unaware foes in close quarters combat or silent arms.
Abilities: Stealth Camouflage,Fortune Device (phys.blow+deviates bullets) and Speed
Weapons: knife,silenced pistol,silenced famas,silenced crossbow with normal+fire+explosive arrows,gravity gloves (choke enemies!),the slam,chaff grenade (converted combines are friendly to you and slaughter each other),quad free fire rpg,bugbait+antlion,berserk ggun;

[BIG BOSS] is an infiltrator who has learnt the ways of the predator in the jungle, healing his own wounds and capping his targets from afar with famed precision.
Abilities: morfine shot,nightvisions,crouch mimetism
Weapons: hunting knife that leeches life,stunstick+manhack,flaregun,free fire scoped desert eagle,scoped tranquillizer shotgun,scoped AWP with embedded bullet time,scoped bigger jackhammer,scoped OICW,quad free fire rpg,bugbait+antlion,berserk ggun,proximity headcrab;

[GRAY FOX] is a ninja wrath who shifts through the fabric of reality to coldly murder any living thing fool enough to try and oppose him. This form is locked until you beat the game once.
Abilities: Shift to Spectral Plane,Ultimate Fortune Device and Instant Gib with any weapon
Weapons: progressive katana,sns-50,sawed-off,xm-8,AUG rifle,super ggun,covenant grenade,chaff grenade,slam,quad free fire rpg,bugbait+antlion;

- General fixes: stats are now ported through levels,fixed bugs concerning invisibility,blue grids and turrets. If you get stuck in a level,hit the Bugfix button on the main menu. If you get too many crashes,lower your audiovideo details and customize your launch options as stated in the FAQs;

- System requirements: same as The Lost Coast.

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Post comment Comments  (20 - 30 of 216)
shorty1k Jul 24 2010, 6:48pm says:

It's been a long time since this mod has been updated, but due to the mac update, it's been totally broken. I'm probably just shouting into the wind here, but can you guys fix it please? I would love to give this a whirl again!

+3 votes     reply to comment
JustBarney Jul 24 2010, 8:55pm replied:

I think you can fix it by changing 220 to 215 in the gameinfo. I haven't tried it yet.

+3 votes     reply to comment
Astro20xx May 18 2012, 6:09am replied:

this fix not work...

+1 vote     reply to comment
shorty1k Jul 26 2010, 10:17am replied:

Thanks for suggestion! That broke map selection, but all the weapons and modes seem to be working in VR mode now. Better than nothing I guess.

+3 votes     reply to comment
JustBarney Sep 19 2010, 9:44pm replied:

This mod serious fixing >:(

+3 votes     reply to comment
Araxiel Apr 26 2011, 4:58pm replied:

After a long time I tried to fire up this mod. What happens: It's broken!
What a shame. I loved this mod so much and now it's unplayable. I would bow to the, no, I would love the person that would fix this mod. If somebody could do that, he would earn my eternal gratitude.

+2 votes     reply to comment
Shriden Jun 6 2010, 7:25pm buried:


Solid snake,and all those others are from Real games,The guy who made this is a newb who copies crap

-11 votes     reply to comment
Mocker67 Jun 15 2010, 1:30pm replied:

Your'e a moron

+10 votes     reply to comment
Cremat0r May 31 2010, 9:59am says:

Ye, a download link on ModDB would be really a nice thing, if you want more ppl to play and love your mod...

+3 votes     reply to comment
XenuXemu Apr 17 2010, 4:26pm says:

Great game, but I have a few questions:

How do I play Grey Fox form? I have completed the game and tried entering the code "greyfox" as it says in the web site, but nothing happens.

Also, I cannot play the bonus level. All it does when I click on it is take me back to the main page. What do?

Someone please answer these as soon as possible, thanks.

PS: Yes, I have tried registering for the help forum but the activation email link is broken.

+1 vote     reply to comment
XenuXemu Apr 17 2010, 7:01pm replied:

An update: Okay, I made the mistake of not checking my spelling before asking for help lol.

I spell it correctly as "GrayFox" now, but I still can't play the class. It accepts the code and plays this music when I input it, but it doesn't change my form into Gray Fox. What do?

+1 vote     reply to comment
XenuXemu Apr 20 2010, 2:22am replied:

Oh nvm I see what to do.

+1 vote     reply to comment
929105942 Apr 13 2010, 7:59am says:


+1 vote     reply to comment
Xul Jan 27 2010, 6:41pm says:

the mod is simply great, trippy, fun, cool character classes... just gibs need to be worked on, they're the original half-life ones and have no physics after they fall to the ground. imo this mod is way better than smod (way less hardware demanding as well).

+2 votes     reply to comment
flippedoutkyrii Sep 26 2009, 11:50am says:

Remarkable mod, this makes half-life 2 even more replayable.

Awesome encounters in Gordon tales as well, some parts really surprised me! :)

Even if it is hard, it's still fun.

+2 votes     reply to comment
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Released Jul 8, 2006
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