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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Long time no see, huh?

It’s already been eight years since the release of 1.35 in 2010, sixyears since the release of the 1.35 hotfix in 2012 and three years since the community-made mountfix for 1.35 in 2015. Time flies so quickly, doesn’t it?

As most of you know, work on the Steam version stalled around 2013. Real life, Source updates and other development complications got in the way of doing things.

A lot of time has passed and we’re all adults with responsibilities now, greatly reducing the time we can dedicate to the mod.

Development was hit the hardest when the Steampipe update was rolled out. Source 2007 was broken to the point we were forced to port the mod over to Source 2013 on a completely new file system.

We could no longer effectively work on features for the mod, all our time had to be spent on fixing things that worked fine before. We lost a good amount of members, including some key members for various reasons. Our team ended up too small for the tasks ahead and even we considered development of the mod to be dead at that point.

But fortunately, that’s over.

Early 2017, development continued and we now have a fully functioning version of Obsidian Conflict running on Source 2013 with lots of new content, features and bug fixes.

Once we are done, this version will finally be released on Steam!



This wouldn’t have been possible without a few new faces on our team: Maestro Fénix, Alice Weiss and Lockzag have been hard at work to make this possible. But we also have to thank our community contributors for helping us out with a few tasks.

However, even with the help we already got, it’s still a lot of work.

Due to our low numbers we’re spread pretty thin across many different tasks, slowing down progress.

There are a lot of “5-minute” jobs we could use some help on. We even accept one-time contributions if you don’t feel like commiting to the team completely.

Mappers, animators and programmers are the kind of people we need. Fixing and updating official maps and mapadds, finishing models, some of which only lack animations or textures as well as working on the code are the tasks we could use an extra hand for.




We can’t give you an exact date for the release yet, but it will likely be some time this year.

Once again, thank you for sticking with us, it’s a real pleasure having you as fans and this mod wouldn’t have been possible without you.

Just have a little more patience with us. To make the wait easier, here’s a little video showcasing some of our new work:

(Turn on captions)


We also have a new website now and updated both the forums and wiki to get rid of the problems they were having.

And one last thing: we have a Discord now, so feel free to join us and see what we’re up to!

Unofficial mountfix

Unofficial mountfix

News 8 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...

Merry Christmas!

Merry Christmas!

News 7 comments

We wish you all a Merry Christmas and hopefully a happy new year from all of the OC Team! While we're at it we would like to give you some news about...

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OC 1.35 Unofficial Mountfix (Full installer)

OC 1.35 Unofficial Mountfix (Full installer)

Full Version 17 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 758)
Gleb_AA-Gun
Gleb_AA-Gun

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?

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FlameOfHeaven Creator
FlameOfHeaven

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
Gleb_AA-Gun
Gleb_AA-Gun

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

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Wojtenko
Wojtenko

oh common! dont die again

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FlameOfHeaven Creator
FlameOfHeaven

We're still hard at work :P

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Guest
Guest

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drugbugz
drugbugz

why do you think its dead

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stevenr380680
stevenr380680

Anyone wanna join my server I host my own server

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Lateralus10k
Lateralus10k

I bet as soon as this is released on Steam Synergy's Playerbase will drop dead to 0 in a few weeks or days.

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Wojtenko
Wojtenko

look at sven co-op

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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

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Latest tweets from @obsidianmod

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

Obsidian Conflict is back on track: Obsidianconflict.net Youtube.com

May 12 2018

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

Jul 19 2017

We just posted some news: "Unofficial mountfix" Obsidianconflict.net

Jul 13 2015

We just posted some news: Breaking the silence Obsidianconflict.net

Oct 8 2014

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