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Synergy - About
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About the Mod

Synergy is the Half-Life 2 cooperative modification that enables you to play with others through Half-Life 2 and it's episodes (Episode 1 and 2), as well as our own levels.

You may also install other third-party mods, such as MINERVA: Metastasis and ROCK 24, to also play them cooperatively with other players.

Synergy tries to maintain the true Half-Life 2 gameplay, while still adding in our own unique ideas.

What is this?
Synergy is a cooperative modification for Half-Life 2.
What do I need to play?
You will need the Steam client software, along with a game that contains Source SDK Base on the same Steam Account. Make sure you've launched Half-Life 2 least once to initialize the game, before you play Synergy. Some servers and maps require Episode 1, Episode 2 or any other custom mod mounted. To play those maps you need to have the required game and have it mounted in Synergy.
How do I install this mod?
You can install Synergy directly through steam, do do so Click here (Requires steam installed an running).
For mor information, please refer to the Documentation.
How long has Synergy been around?
Synergy has been around since early 2005. The first release was in September of 2005. Before Synergy, there were 2 mods: Dev Coop and DC Cooperative 2. The latter has been around since 2003.
Can I see what you are working on?
The best way for you to see what is going on right now is to check the Development Page and our Forums

The documentation contains some usefull information on playing cooperatively and changes to Synergy.

We also provide some Documentation for level artists and model designers, to help make the editing experience easier. However, we do target the "Advanced Users" audience, but you are welcome to send us feedback or ask questions at any time.

You will find the Documentation, right here.
Help and feedback can be sent to:

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