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.

RSS Reviews  (0 - 10 of 620)

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

So I played Obsidian Conflict...
Well, I expected a coop-mod and that's what I've got, but didn't expect it to be THIS good.
My first impression was bad, because there was no server with a good ping back then. However, as soon as there was one I played it for hours...and hours...and hours.
Gameplay: Great. I got what I expected and even more.
Maps: This mod got them all. The realistic ones, the funny ones, the strange ones and the ones you already know from other games. (My personal favourite is called "oc_manor").

However, this mod is by no means perfect.
The two mayor aspects that let me down were these:
1. The quality of the content is everything but constant. You have high-quality contents, medium-quality contents and low-quality contents. The point is that this applies to literally everything in this mod (maps, weapons, skins, models,...). Sometimes you have different "levels of quality" in one map. This should really be adressed for the Steam-release. I think they should overhaul the maps, what wouldn't be much work for the small, fun-maps but a hell lot of work for the bigger ones.
2. The player-models. I think it's OK to let players choose as who they play, but as long as there is the possibility to choose whatever you want there always be people that will choose strange player-models. All I want to say is this: When you play a realisticly-styled map it just plain sucks to see some animie-fan's ruining the atmosphere. I don't want the dev's to restrict it, but why not making it like this:
The mappers add the models to their maps and the player can choose from one of these. This way you would have fitting models to the map, e.g. play as Star Wars character on a Star Wars map, play as Halo character on a Halo map, play as animie character on an animie map,...

To sum it up:
Just give it a try. Go play and have fun!
But, don't forget to install and mount the other games that are supported in the mods options.


best coop mod for half life 2 in my opinion the only big problem is that it lack servers right now it got around 15 servers online...i guess the lack of servers is due to the fact that not many people know about this mod since when you search for hl2 coop mods the first mod you will find is synergy,i am not saying synergy is bad i am just saying that i think obsidian conflict is better for many reasons so i give OC a 10/10 score!!! hope the devs make a official steam version soon

Obsidian conflict in my opinion is a beatiful mod, full of heart-racing action, beautiful cinematics, friendly players, and kick-*** maps. This game deserves an 11/10, for it's massive amount of re-playability, innovative map design, and it's quickly growing content.

awesome sauce

this game is a kick *** game i love to play it that why i made a clan out of it call the oc army love this game and hope you guys stay strong and make some cool maps


super mod )


Very Great mod! one of the best mods i ever seen.

Only thing holding this mod back (like most MP Source mods) are the exceeding amount of trolls on certain or various servers.

Good Examples: MGO Dissent and LevelNULL Servers.


A very interesting mod i've been looking at. Looking forward to play this game! Great effort and work to the makers of this mod!



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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