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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Synergy Update #44

2 years ago News 5 comments

Hello everyone, it's been a while!I have some good news! We have some new development team members to introduce you to. Please officially welcome Travis (Krazy Kasrkin), Edfake and Patrick! They will be working on the various things with Synergy, including the code and maps.
What this means for you is: more updates and more development.We have a changelog ready for you all, which you can see here: Change Log - 44.We do have 2 screenshots to show you as well. We've added another vehicle type, which Fury_161 has created based on the original Buggy. Edfake has updated the scoreboard, with more changes planned. We're looking at figuring out a scoring system as well. Anyway, take a look below:

Also, we've finally returned some of the favourite Synergy content from before the 'OrangeBox' version! Please welcome back kilgore's maps, the Gargantua, the Combine Pulse Rifle and the MP5K weapons!
The following maps have been put back where they belong: syn_Apprehension, syn_DeadSimple, syn_FogIsland and syn_Forgotten_EvilsWe have some interesting things planned for next year, so stay tuned!
Happy Holidays from the entire Synergy Team!

If you do not have Synergy installed on Steam, you can do this by clicking on the following link: Run

Have fun!

Synergy Version 28 Live

Synergy Version 28 Live

4 years ago News 2 comments

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

The FINALLY!!1 Update

The FINALLY!!1 Update

4 years ago News 16 comments

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

Oh, yeah! remember that mod?

Oh, yeah! remember that mod?

4 years ago News 11 comments

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

"Still Alive..."

"Still Alive..."

5 years ago News 17 comments

A small update released that includes an updated map.

Post comment Comments  (0 - 10 of 418)
4Simp Jun 7 2015 says:

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

+1 vote     reply to comment
luisgreen May 2 2015 says:

I want download thus game but i cant I was searched this games muoch time but i cant find but in no steam because i dont know about steam somebody please helpe to download if someone know

+1 vote     reply to comment
Guest Sep 23 2014 says:

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geotavros Feb 4 2014 says:

can you please mark it as COOP or Multiplayer + Coop in mod description, because it is not shown in lists of top coop mods. You set it as multiplayer

+1 vote     reply to comment
ALOIYD Dec 10 2013 says:

Dear devs. i have a problem. i can't change my model. it keeps stuck at female_1.mdl and everytime i have to type "exec autoexec" to use male_7. then if i return to options. it get backs female_1.mdl

i want this bug fixed. because i hate the game chooses models for me.

Also. can i play as combines? humans sucks for a while.

+1 vote     reply to comment
NorilskFilin Nov 16 2013 says:

Devs, can you make workable "custom" folder in the game directory, just like in hl2 deathmatch please? I'd really appreciate it, cause I like play with custom content and I don't wanna replace the original stuff. :)

+1 vote     reply to comment
Scanner-Darkly Oct 23 2013 says:

Is it possible to get Synergy Beta v2.3 working.

+2 votes     reply to comment
KOYK_GR Nov 22 2014 replied:

you are in my mind dude.but you know "donation fetures" have ruin this mod. you cant add nothing in the new version but in beta you can.but first you must make it work as you say.

if obsidian conflict mod was more active know

+1 vote     reply to comment
Santi95.95 Oct 15 2013 says:

a friend gets trown back to desktop at first he had could not load scripts,surfacepropietaries manifest.txt he pasted the files from hl2 folder into the synergy scripts folder and now no problem but it goes back to desktop no error

+1 vote     reply to comment
Lord_Dravek Oct 8 2013 says:

Looks that your custom maps are on the blocky side (and lighting needs work as well), perhaps you could use the help of a guy like me that can add detail.

+1 vote     reply to comment
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Release Date
Released 2007
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399 votes submitted.

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Highest Rated (4 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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