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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Kept you waiting, huh?

It has been five months since we announced our comeback, and the response was impressive: not only have the people continued to remember us, but also flocked en masse to our Discord and Steam group to thank us for our efforts. Even PC Gamer has dedicated some words to us. That was incredible!!

So you are probably thinking “Ok, what has been going on after all these months?”:

To start with, we got a new team member, Troop as our animator. He did the animations of the new Sniper Rifle and the Ion cannon, and reanimated the OICW. But he went further than that, as he also made a whole new model for the Alyxgun, as well as some light fixes for other viewmodels.

News of our resurrection reached the ears of an ex team member, who has since then rejoined us: KittopiaCreator. He’s responsible for programming the Ion cannon as well as assisting us on internal fixups and improvements. He’s also an expert with particles, as one can appreciate them on the Ion cannon.

oc seamus

oc starlight

Then came the contributions from the community. From mere fixes on certain models, to new textures, to even fixing and remastering maps! All of them have been greatly appreciated as it helped us to focus on other tasks. We can never be too thankful of your contributions. Here comes some examples of such dedication:

oc zelda

Zelda, remastered by Spartykins

oc courier

Courier, remastered by AsG_Alligator

oc harvest

Harvest, fixed by Sherlock

During this time we have re-established contact with other mod teams in order to strengthen our capacity of solving problems with Source, which among other things it lead to solve some long time bugs of Source SDK Base 2013, like the playermodels and NPCs no longer being able to blink, or even the dreaded playermodel twitch and invisible bug that plagues all Source multiplayer mods and games on pre-L4D branches.

oc stroopers

As if all of the above weren’t enough, almost a month ago, it came to our knowledge that some legendary GoldSrc modders like Besli, RavenGT or Ambient.Impact were still active, so we contacted them in order to know their opinions as former members of H.I.T. about our old accord of using their content for our mod.
Not only were they honoring our prior agreement, but also to our surprise, they gave us a pack with HD models that have originally been done for HL1 - some of which were either a rare sight on the Internet or outright unseen by the common user!
We have ported and adapted them for our HL:S campaign and they have certainly helped to raise the quality, while not looking out of place by maintaining visual themes.


Even as just a mere anecdote, we were present at the GSH LAN party in Hannover this month. The preparation for this event has pushed our limits to the point where we had to work against the clock, but ultimately an ( almost ) bug free “demo” was shown at the event. We learned important lessons due this and enriched our experience.

We know that at this point you are all waiting to watch our third Devblog video. While most of our work can’t be truly appreciated through this, we have some new stuff to show, so here it is:

( Don’t forget to turn on captions )

We would like to remind our fans that we are still looking for programmers and mappers, so if you think you can give us a hand, come to our Discord and talk to us.

And finally, we are sorry to say that unless a miracle happens, the chances of releasing on Steam before the year ends are very, very slim. But, as most of you might know, game or mod development is rarely easy under a crunch - especially when dealing with Source!

Thank you again for your support, and see you soon!

Obsidian Conflict is back on track

Obsidian Conflict is back on track

News 37 comments

Long time no see, huh? It’s already been eight years since the release of 1.35 in 2010, six years since the release of the 1.35 hotfix in 2012 and three...

Unofficial mountfix

Unofficial mountfix

News 9 comments

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

Breaking the silence

Breaking the silence

News 19 comments

We have a hotfix in the works to address some of the problems that have been plaguing OC the last few months, it will fix the now-broken mounting system...

Obsidian Conflict Devblog Video #1

Obsidian Conflict Devblog Video #1

News 25 comments

We've been quiet for too long again, heck, we almost could have reused the news post from last Christmas by now. So, to break the silence, we present...

Add file RSS Files
OC 1.35 Unofficial Mountfix (Full installer)

OC 1.35 Unofficial Mountfix (Full installer)

Full Version 19 comments

Full installer, installs 1.35 plus hotfix and does the mountfix automatically. For detailed instructions, check the mountfix post. (File updated 07.03.2018...

OC 1.35 Unofficial Mountfix (Mountfix only)

OC 1.35 Unofficial Mountfix (Mountfix only)

Patch 1 comment

Stand-alone mountfix, for existing installations. For detailed instructions, check the mountfix post. (File updated 07.03.2018)

Obsidian Conflict 1.35 Hotfix #1 (Client)

Obsidian Conflict 1.35 Hotfix #1 (Client)

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)

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

Full Version 97 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

Full Version 27 comments

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

Comments  (0 - 10 of 762)

this should be on steam

Reply Good karma Bad karma+5 votes

can't wait for the update. those new models look nice.

Reply Good karma Bad karma+4 votes

Thats great! Im just waiting for Steam relise whenever it comes.

Reply Good karma Bad karma+6 votes

Really loved this mod, even if most people wanted to play the boring maps like Farm and Fishing.

Reply Good karma Bad karma+3 votes

Loved to play this mod, i love maps like the one where you can fish at pier and catch either loot or NPC, it was hilarious to drop antlion guard at other player and see him fly onto sea. More maps like that please, with their little gamemodes and features.

Reply Good karma Bad karma+2 votes

Not to sound weird but, I remember there was a girl in charge of OC... Forgot her name but she was just too kind of a person, is she still in it?

Reply Good karma Bad karma+1 vote
FlameOfHeaven Creator

Do you mean me? I think I remember talking to you a few years back. If so, yes, I'm still on the team. :)

Reply Good karma+1 vote

Yeah it's you, and I still have you on Steam as well! :D

Reply Good karma Bad karma+1 vote

oh common! dont die again

Reply Good karma Bad karma+1 vote
FlameOfHeaven Creator

We're still hard at work :P

Reply Good karma+1 vote

why do you think its dead

Reply Good karma Bad karma+1 vote
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621 votes submitted.

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Highest Rated (9 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 by Killer_man_1996


Latest tweets from @obsidianmod

It has been five months since we announced our comeback, let us show you what we've been working on since then!… T.co

Oct 28 2018

Fall 2018 media update: Obsidianconflict.net Youtube.com

Oct 27 2018

Obsidian Conflict DEV blog video #3: Youtu.be via @YouTube

Oct 27 2018

We're excited to have an early version of the upcoming Steam release of Obsidian Conflict playable at this weekend'… T.co

Oct 4 2018

RT @gabeslovetub: Getting ready for take off! T.co

Jun 8 2018

ModDB celebrates again Mod Appreciation Week, so if you go and express love for us one can win games as prizes!… T.co

May 29 2018

❤️❤️❤️ T.co

May 13 2018

RT @ObsidianMod: If you want keep up2date with anything we do, we got a discord server by now: Discord.gg

May 12 2018

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