Synergy is a Half-Life 2 co-opertive multiplayer modification.

We have evolved from multiple mods (DC Co-op 2, Dev Co-op and Tim-Coop). This modification strives to give Half-Life players a true Half-Life 2 cooperative experience.

The mod features our own levels and the ability to play the Half-Life 2, Episode One and Episode Two campaigns cooperatively.

In addition, you can add more content by installing third-party mods, such as ROCK 24 and MINERVA: Metastasis, then playing them in Synergy!

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RSS Articles

Hello Half-Life/Hard-Life/Synergy fans,

Sorry about the long wait for updates, Schedules have not been friendly over time yet fury_161 has taken some time out to show our current "Office Complex" chapters shown in a YouTube video below.



Consider joining our community and discussing openly any opinions that you may have. We are all aware that changing Half-Life may not be everyone's cup of tea. This mod may not be for everyone but those who appreciate our outlook are more than welcome.


Our changelog is extremely extensive and is not publicized. Every other night I take time to program with our other team members. Getting results is a bit more important than updating a log with minor improvement features.

Synergy Update #44

Synergy Update #44

News 5 comments

Updates to Synergy have been made public on Steam! Version #44 is out! Old Synergy content has been restored!

Synergy Version 28 Live

Synergy Version 28 Live

News 2 comments

Another update for Synergy! New characters for Donors and many bug fixes!

The FINALLY!!1 Update

The FINALLY!!1 Update

News 15 comments

Finally! Actual UPDATE to Synergy, the cooperative mod for Half-Life 2!

Oh, yeah! remember that mod?

Oh, yeah! remember that mod?

News 11 comments

Yeah, We are back. This time its actually working out between team members and everything is looking up.

RSS Files
Half life 2 Update HD Textures

Half life 2 Update HD Textures

Textures 10 comments

This is a HD, 2k & 4k Texture pack for Half-Life 2, Half-Life 2 Update, Episode 1& 2 and Synergy. There are approximately (i lost count) 140 textures...

Half-Life 2: Synergy R1.1 Full Install

Half-Life 2: Synergy R1.1 Full Install

Full Version 1 comment

The latest full Synergy package.

Synergy Beta 2.6 to Release 1.0

Synergy Beta 2.6 to Release 1.0

Full Version

This will update the Synergy mod from the latest beta to the official (non beta) 1.0 release.

Comments  (0 - 10 of 421)
swagNswift
swagNswift

Not Ded? NOT DED!!!!!111

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OblivionWarp
OblivionWarp

so uh, i know this page is dead, but how do you play mods in synergy?

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Sante_Caserio
Sante_Caserio

Has classic mode been added yet?

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DarthDio
DarthDio

No Downloads?

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Guest
Guest

store.steampowered.com/app/17520/

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cryos-lithos
cryos-lithos

Sad to say, but this mod is dead. And we'll never play Black Mesa cooperatively... :((

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CyborgParrot
CyborgParrot

Well we'll have Obsidian Conflict some point this Year.

Plus you can play Black Mesa cooperatively with this Mod: Steamcommunity.com

It's not perfect I know, but it's better than nothing.

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Guest
Guest

Not exactly, it's on steam.

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cryos-lithos
cryos-lithos

I know it. I said that no one is currently working on it

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Qweekskowped
Qweekskowped

So this is like Sven Co-Op but it's on Source?

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drvgbugz
drvgbugz

No this allows you to play the Half-Life 2 campaign with friends. If you want a game similar to Sven Co-Op go look at Obsidian Conflict its a custom Co-op game on the source engine. Moddb.com

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Highest Rated (6 agree) 7/10

Synergy was once the best Coop mod out there. Before it went to steamworks.

Before it went to steamworks it had awesome maps, badass new guns, custom player models, lots of other things, but then they went to steamworks and it unfortunately got bad. They ripped everything off it and left the custom player models just to donators.

The only thing I still like in this game is the "Trials" pack of maps. Only good thing left in it.

Apr 10 2010 by xXMaNiAcXx

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