Obsidian Conflict is a cooperative multiplayer modification set in the Half-Life 2 universe.
It features a large amount of new gameplay features on all-new maps specially designed for the mod with focus on cooperative gameplay, as well as over hundred user-made maps following the same formula.

In addition to that, You're able to play through vanilla Half-Life 2 all the way up to Episode 2, as well as experimental support for cooperative Half-Life: Source play.

Key features:

- All Source engine Half-Life series games playable in co-op online (Half-Life: Source, Half-Life 2, Lost Coast, Episodes 1 & 2)
- A large set of included custom maps, some in the form of classic combat & teamwork puzzles and others offering extraordinary new gameplay experiences such as cooperative farming and fishing
- New weapons, including dual Uzis, Medkit, Sniper Rifle, the Alyxgun, the Tau Cannon, deployable Manhacks, as well as support for scripted weapons allowing use of weapons from Counterstrike and Day of Defeat Source
- New NPCs, including many from the original half-life such as a fully-functional ichthyosaur, as well as a working mortarsynth from HL2
- Special merchant NPC and related entities, offering gameplay where players can spend points from their score to purchase weapons and map-specific objects
- Many co-op related features, such as a server-side lives system, hud waypoints, player locator, attention & medic calls, and map objectives, as well as players' inventory carrying over between level transitions
- Great support for community mappers, including features like the mapadd system to easily edit existing maps without having to recompile them, as well as tutorials and prefab examples for all of OC's new entities and features
- Support for custom playermodels and custom colorizations on weapons and hud elements

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WIP Map OC HUD Mockup Military Tablet
Blog RSS Feed Post news Report abuse Latest News: Unofficial mountfix

7 comments by FlameOfHeaven on Jul 13th, 2015

Hello everyone, we’d just like to inform you that our community member jfm created an automatic mountfix installer, big thanks to him!

Please note that it is not created by the OC team and we do not take responsibility for any damage it might do to your system.

It comes in 2 versions, one with a full OC installer included and one with just the mountfix.
Please make sure .NET Framework 4.5 is installed and you're running at least Windows Vista, XP is not supported.


Zipped versions, for those that want them:

So how does it work and what does it do?

  • Before installing, make sure you have SDK Base 2007 and all the games you want to mount installed and fully working in Steam.
  • Now, you either just run the full installer, which will execute the mountfix.exe once it’s done installing OC, or
  • place the mountfix. exe in your existing Steamapps/Sourcemods/Obsidian folder, run it, either type "client" or "server" and hit enter.

The server part installs and configures a basic server config setup for first time server admins and requires a login.
The login is required for SteamCMD and is NEVER stored.

For more information and credits, check this Readme.

Please note that the mountfix can take a long time to complete and it may seem like nothing is happening at all. Don’t close the window, this is normal! The window will close once it’s done.

What the mountfix does is it first scans for your installed games, extracts the content from their depositories and then creates symlinks in your steamapps\common\Source SDK Base 2007 folder.
This process is very hard disk-heavy and thus can take a long time to complete.

This also doubles the disk space taken for each installed, mountable game since the files now exist twice; once in the normal Steam depositories and once as unpacked files which OC can read.

We are still working on a proper hotfix, but until then, this is a good stop-gap measure if you or your friends want to get into some OC action right now.

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OC 1.35 Unofficial Mountfix (Full installer)

OC 1.35 Unofficial Mountfix (Full installer)

Jul 13, 2015 Full Version 2 comments

Full installer, installs 1.35 plus hotfix and does the mountfix automatically. For detailed instructions, check the mountfix post. (File updated 19.07.2015...

OC 1.35 Unofficial Mountfix (Mountfix only)

OC 1.35 Unofficial Mountfix (Mountfix only)

Jul 13, 2015 Patch 0 comments

Stand-alone mountfix, for existing installations. For detailed instructions, check the mountfix post. (File updated 19.07.2015 08:59)

Obsidian Conflict 1.35 Hotfix #1 (Client)

Obsidian Conflict 1.35 Hotfix #1 (Client)

Jan 23, 2012 Patch 13 comments

For mod client only, not required on dedicated servers. (Requires 1.35 Full.)

Obsidian Conflict 1.35 Hotfix #1 (Server)

Obsidian Conflict 1.35 Hotfix #1 (Server)

Jan 23, 2012 Server 1 comment

For dedicated servers only, DO NOT INSTALL ON MOD CLIENT!! (Requires 1.35 Full.)

Obsidian Conflict 1.35 Full Installer

Obsidian Conflict 1.35 Full Installer

May 30, 2010 Full Version 96 comments

Note: The playermodel installer is currently unavailable. Just hit "Cancel" during that dialog pop-up and the installer will continue properly.

Obsidian Beta 1.34 Full

Obsidian Beta 1.34 Full

Dec 27, 2008 Full Version 28 comments

Note: Only choose "Install client only" or the mod wont install properly.

Post comment Comments  (660 - 670 of 730)
[flesh]sniper1 Apr 3 2007, 3:33am says:

awesome modeling skills

+1 vote     reply to comment
Zarfa Apr 25 2008, 6:17am replied:

I know who do them :)

+1 vote     reply to comment
Eegah Mar 18 2007, 8:43am says:

Me likey, I hope you guys keep going strong.

+1 vote     reply to comment
mark008 Feb 14 2007, 8:37am says:

hey! i have ideas!

1. make a lot of horror maps... theyre cool! like oc_evildead! but without stalkers!
2. make please in next version a buggy with passenger seat! so u can enter with someone!

+1 vote     reply to comment
mark008 Feb 11 2007, 1:18pm says:

ahhh! this mod rockz!!@

+1 vote     reply to comment
skidz Jan 9 2007, 12:47pm says:

Thank you all for the Comments, we will continue to improve the mod. :)

+1 vote     reply to comment
skidz Jan 9 2007, 12:46pm says:

Xmeagol: I'm no crazy coder, but porting those npcs over wouldn't be as hard as you think. Valve have made it surprisingly easy to create path finding AI of any type.

+1 vote     reply to comment
UnKn0wN Jan 7 2007, 12:16pm says:

:|:|:/:/how do i get my mod to work on my server and how do i get my server on the server browser list on half life 2 deathmatch?:/:/:|:|

+1 vote     reply to comment
AmdGamer Jan 6 2007, 12:39pm says:

This is that kind of mod Ive been looking for ever. Its really fun to play this on lan with friends. Some of the maps didn't work really well tought, but that doesn't matter.

The lives system was kinda buggy, I had 9 lives and my friends had 4 when we started a game with lives. No matter if I changed the amount of lives, still that way.

Id like some Co-op defence maps. You know, like 100 antlions / zombies attacking a small base / a house in the desert / in the forest. And some NPC soldiers and turrets to defend too. There was one map like this, but it had like 1 antlion coming in per minute, which died in few seconds. And it wasn't defence, it was capture the supplies. Fun anyways.

I couldn't get the console work with this mod. Don't know why, it works on all the other mods.

Best map we have played now is oc_antlion_attack. Downloaded it from the forums, can't remember who made it. Its great, thought it needs more NPC turrets or NPCS. Still better than any map on this mod.

Anyways, I rate the mod 10/10.

+1 vote     reply to comment
skidz Nov 20 2006, 8:47pm says:

Sorry guys, uploaded 1.21 to moddb and updated the news. Added acouple misc screenshots of gameplay.

+1 vote     reply to comment
Kinhoshi Nov 14 2006, 12:55am says:

I'd do it, but I'm not sure if I should. Here's a link to it until it is uploaded. Gamerzunlimited.us (Patch)
Gamerzunlimited.us (Full 1.21 install)

+1 vote     reply to comment
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Release Date
Released Jul 2008
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615 votes submitted.

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Highest Rated (8 agree) 9/10

Nice option, almost perfect co-op mod and with a lot more options than Synergy. You should try it. :D

Dec 3 2010, 12:25pm by Killer_man_1996

First Person Shooter
Multiplayer & Co-op

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