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.

Report abuse Obsidian Conflict 1.35 Full Installer
Full Version
May 30th, 2010
672.10mb (704,745,583 bytes)
73,506 (2 today)
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Note: The playermodel installer is currently unavailable. Just hit "Cancel" during that dialog pop-up and the installer will continue properly.

While "1.35 will be released sometime this month" may have meant the end of the month, Obsidian Conflict 1.35 is now available for download.

First starting off as what was planned to be just a quick "content update", this update is now the compilation of over a year's work of map and code updates. Many of our old maps have been updated with bug fixes and gameplay/visual improvements, as well as a whole bunch of new maps for players to enjoy. Here's a look at some of the new content in 1.35:

* Part two of the broken escape series. This epic campaign features fast-paced combat, teamwork puzzles, breathtaking visuals, and custom npcs and weapons. Plus an updated version of the first part!

* Updated oc_harvest. Includes a major graphics overhaul, as well as new plants, hardware store items, farm upgrades, as well as new gameplay systems such as bird hunting

* oc_cardwar, a map in which two teams of players create squads of npcs from cards, competing in several unique arenas

* oc_starship_troopers, a combat-heavy defense map based on the movie. Players have to work together with their NPC allies to repel the arachnid horde

* oc_wildfire. This walkthrough map consists of many unique environments, with plenty of teamwork puzzles and combat scenarios for players to complete

As well as many more additions and updates. Special thanks to all those who supported us throughout development, we wouldn't let you down. Head over to the downloads section here on obsidianconflict.net to get 1.35 and jump in on the fun!

Haven't seen enough media yet? Or you just never played OC before and want to get a better idea of what it is about? Then here is the 1.35 teaser trailer again!

And if 1.35 wasn't enough, we are also glad to announce that we got Steamworks support, so the next major version will be released on Steam!
This means the mod will be installed and automatically updated through Steam, as well as achievements, Steam Cloud and all that fancy stuff!
Some of you might be scared this would strip down OC's content and features the same way it happened to some other mod that went on Steam, But this will not be the case.
We have been in constant contact with valve to make sure what we have to do to keep everything.

We are also trying to get the Linux server binaries done. Once they are in a stable state, people will be able to test them.

And a few last important side notes before you hop into the game:

*Please note that valve lately updated all Half-Life 2 and Episode 1 maps for the orange box engine.
Due to time constraints, we could not test all of them to make sure their changes don't interfere with oc. Since we didn't want this to delay the release even further, we are asking you, the community, to please report all bugs you find to our Bugtracker.
We will release another quick patch to adress all reported problems, so please excuse us if some parts of the campaigns may be unplayable right now.

*We also could not finish the broken_escape_02 finale map in time for the 1.35 release. It will either be shipped in one of the next hotfix/ content patches, or released on the forums.

*The installer is prepared to download and install the custom playermodel packs automatically if you chose so. But this feature is not fully working yet since we need to finish the webserver back-end first.
If you get an error message similar to this, simply chose "cancel", the installation will then continue normally.

Preview Image
Obsidian Conflict 1.35 Full Installer
Post comment Comments  (50 - 95 of 95)
Cokecola Jul 7 2010, 9:11am says:

I need the patch.
Uh....when patch it's come :D?

-2 votes     reply to comment
RonanZer0 Jul 13 2010, 5:52pm says:

hey guys its only takes 8 min. to download for me atleast :D .

+2 votes     reply to comment
Zaqq_the Aug 22 2010, 8:10am replied:

15 for me

+2 votes     reply to comment
zombie_pwner Dec 23 2010, 8:53pm replied:

5 for me :D u people have slow internet

+2 votes     reply to comment
sasuke2490 Jul 22 2010, 10:10am says:

cant wait for it they siad it got steamworks for the next big version =D

+2 votes     reply to comment
WerQ Jul 27 2010, 9:43am says:

2010_5_30_oc-beta1.35_full.exe is not a valid win32 application.

What? Help please...

+2 votes     reply to comment
WerQ Jul 30 2010, 9:39am replied:

Anybody? Help me, i need some... help... cause i cant play it...

+2 votes     reply to comment
Sha~nya Creator
Sha~nya Jul 30 2010, 10:01pm replied:

Try downloading it again, it's most likely a corrupted file.

+2 votes   reply to comment
zombie_pwner Dec 30 2010, 5:22pm replied:

theres bugs on 32 bit. My friend got the same error on his windows XP 32 bit computer and it worked fine on his 64 bit computer. It's all glitched out. sry m8 :(

+2 votes     reply to comment
Killerpanser Apr 24 2011, 4:06pm replied:

I think this installer is for 64 bit not 32 bit

+2 votes     reply to comment
PhenomX Aug 8 2010, 11:26pm says:

after choosing the language, i can see the installation on the taskbar, when i click it nothing comes. task manager shows it not responding and 100% CPU usage. I have XP media center edition... please help!

Edit: never mind i let stay there for like 4 mins and it worked

+1 vote     reply to comment
Mysticflame Aug 19 2010, 11:51pm says:

nevermind this comment i fixed it
:D see you guys on there if you get it

+2 votes     reply to comment
Onemaster Sep 20 2010, 11:06am says:

3h left, cmon, hurry!
i hope the download dont crash - my internet is sometimes quite bad and does that
shame there's no torrent download here?

+2 votes     reply to comment
Beastsoldia Oct 5 2010, 11:39am says:

Hey do i only need hl 2 to play this or hl 1 source, hl2, ep 1 , ep 2 ?

+2 votes     reply to comment
zombie_pwner Dec 30 2010, 5:28pm replied:

all HL2 games (ep1, ep2, lost coast, and HL2) and maybe HL1 for the HL1 maps but noone goes there :D

+2 votes     reply to comment
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Beastsoldia Oct 5 2010, 11:43am says:

use the filefront mirrios it took me 7 minits

+2 votes     reply to comment
Shriden Nov 28 2010, 12:27am says:

Im gonna go and take a look at this(Download and look around)I like The work thats done,good models,good textures,ITS ALL GOOD!

+2 votes     reply to comment
mario434343 Dec 16 2010, 5:15am says:

how to add a mod to half life 2 ? can anyone tell me plz i want to play this but no idea how pm me plz :(

+2 votes     reply to comment
zombie_pwner Dec 30 2010, 5:38pm replied:

go to mod options and check the boxes for games u have

+2 votes     reply to comment
maxgame123 May 8 2011, 6:10pm says:

Hello OC team, I would like to inform you that there is a problem with this version of OC. I am starting it up and then less than 3 seconds after the menu pic pops up but none of the options like "Find Server" or "Mod Options" and it just exits out and I get this strange error.

Mount Filesystem (241) failed:
SteamMount Filesystem(384,241,0x1205fd28=,0x1205fc18) filed with error 116:
Cache needs repair.

I wish you could get this fixed at your earliest convenience because I have tried this mod and loved it very much so I just request that you fix this problem. I am running Windows 7.

+3 votes     reply to comment
maxgame123 May 10 2011, 6:35am replied:

Alright I fixed that problem of mine; but could you please, fix the custom player models?

+2 votes     reply to comment
zombie_pwner Aug 21 2011, 3:50pm replied:

WAIT WAIT WAIT! I get the same error how'd you fix it?

+3 votes     reply to comment
skyhunter713 Dec 22 2014, 2:57pm replied:

yeh how did you fix it?

+1 vote     reply to comment
K@ktu$ Jun 21 2011, 12:59pm says:

When i open the shortcut the my computer window appears, help!

+2 votes     reply to comment
zombie_pwner Nov 27 2011, 4:29pm says:


I keep getting this error every time I try joining a game PLEASE HELP

+2 votes     reply to comment
Sha~nya Creator
Sha~nya Nov 27 2011, 7:36pm replied: +2 votes   reply to comment
loudonlune Feb 11 2012, 9:14pm says:

The Installer CRASHES when I try To install it.

+2 votes     reply to comment
IronWoodside Jun 25 2012, 10:41pm says:

something ****** with the internet it is slow download Jesus

+1 vote     reply to comment
DmanX55 Aug 18 2012, 11:01am says:

I think the link is broken man i cant even enter downloading it

+1 vote     reply to comment
BrandontheUnknown May 29 2013, 10:30pm says:

Only takes me 12 Mins

+1 vote     reply to comment
darkkiller1011 Jun 27 2013, 1:18pm says:

Umm I need help at the end of my installation when it acuallys dowload the player models nad i cant stop it from dowloading the custum player models and wen it does that my pc says its perfroming a illegal action help??

+1 vote     reply to comment
MasterWolff Jun 30 2013, 3:01am says:

I Love This

+1 vote     reply to comment
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IneedHelp! Aug 15 2014, 4:11pm says:

hello could somebody help me because i have Windows 8 and wend i download it for me dont apear has a .exe file or a zip one pls help!

+1 vote     reply to comment
skyhunter713 Dec 22 2014, 6:12pm replied:

add .exe to the end of the file should work

+1 vote     reply to comment
soldine173 Aug 16 2014, 7:56pm says:

To be sincere, I've found a bug when I exit the Mod. When I start the Mod again, or when I start another Game on Steam, it will say that there's a game still running.(Obsidian Conflict)

+1 vote     reply to comment
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TheLastCrawler Feb 18 2015, 5:12pm says:

I dont know, but I need Steam?, I need original game files, or just I have to create a shortcut to hl2.exe then -game xxxx? or I need a Source SDK [I have 2007 beacause of Black Mesa]

+1 vote     reply to comment
faroukderbali2 Apr 8 2015, 1:53pm says:

lol a nice mod for those who don't have Half-life 2 and want to play it only co-operatively, so guys if you don't have Half-life 2 just download and install steam then download and install Source SDK 2007 Base from steam then download and install this mod where sourcemods folder is (usually under steamapps/sourcemods), Now you can play it without having to get Half-life 2 or any of it's episodes :3

+1 vote     reply to comment
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Released Jul 9, 2008
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