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  (40 - 50 of 418)
sitrumvodoi Jul 26 2012 says:

i got a problem ,when i launch synergy on steam it appeared something lik this:
engine error
synergy requires a registered copy of HALF-LIFE 2 installed on this steam account to funtion correctly

help , i hope someone can help me

+2 votes     reply to comment
Dejected-Angel Oct 5 2012 replied:

Try reinstalling both game and mod.

+1 vote     reply to comment
Captain_Hell_Knight Aug 4 2012 replied:

Do you have Half-Life 2 on Steam?

+2 votes     reply to comment
sitrumvodoi Aug 4 2012 replied:

hl2 required

+2 votes     reply to comment
Captain_Hell_Knight Aug 18 2012 replied:

Then I don't know.

+3 votes     reply to comment
sitrumvodoi Jul 23 2012 says:

how to install the mod and where should i install it ???

+2 votes     reply to comment
Physika Jul 24 2012 replied:

Just download it on Steam

+2 votes     reply to comment
sitrumvodoi Jul 23 2012 replied:

and hl2 installed

+2 votes     reply to comment
ron30 Jul 17 2012 says:

trying out some custom synergy gameplay with friends. edited berserker cfg as well as enhanced bindings like my "all weapons zoom"

+2 votes     reply to comment
DanielKeller May 29 2012 says:

Quick question - is it possible to have someone from steam friends join my game or am I restricted to listen/dedicated servers?
The former would be very convenient and the latter is impossible because I got a dynamic IP and can't afford server space just for the sake of playing with 2-3 friends once in a while.

+2 votes     reply to comment
Marvin_hun May 28 2012 says:

Hey, I found many good HL2 mod and we would like to play it in coop with using Synergy.

For example: "Mesa: Fall Back" Opposing Force style in HL2. The mod doesn't use custom dlls, but has ~30 maps. How can I use it in Synergy?

+2 votes     reply to comment
Marvin_hun May 30 2012 replied:

Nevermind, problem is fixed

+2 votes     reply to comment
ZEPHR May 18 2012 says:

how long until next version, because i donated ;)

+2 votes     reply to comment
Zuul_1974 May 11 2012 says:

What's going on with your website?

+3 votes     reply to comment
blu3flamé100 May 11 2012 replied:

Well somethings gone wrong, and the moddb page is very slow so maybe we should start group chat on the official group.

+2 votes     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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