Synergy enables you to play through the Half-Life 2 series and many other 3rd-party campaigns cooperatively with friends.
Release Date: Sep 1, 2005

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Community-Made Mod

This game requires that you own Half-Life 2.

Click here to learn more about mods on Steam.

Play Synergy

Half-Life 2 Mod

 

Recommended By Curators

"(Mod) This is a Must if you like the half-life games. All singleplayer campaigns are now multiplayer & better than ever. Black Mesa Source comming soon!"
Read the full review here.

About This Game

Synergy enables you to play through the Half-Life 2 series and many other 3rd-party campaigns cooperatively with friends.

Supported Games:

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum
    OS: Windows® 7 (32/64-bit)/Vista/XP
    Processor: 1.7 GHz Processor (Requires support for SSE2)
    Memory: 512MB RAM
    DirectX: DirectX® 8.1
    Hard Drive: 1 GB available space
    Sound Card: DirectX Compatible
    Network: Broadband Internet connection
    Recommended
    OS: Windows® 7 (32/64-bit)/Vista/XP
    Processor:Pentium 4 processor (3.0GHz, or better) (Requires support for SSE2)
    Memory: 1GB RAM
    DirectX: DirectX® 9
    Minimum
    OS: OS X Mountain Lion 10.8
    Processor: 1.7 GHz Processor
    Memory: 1GB RAM
    Graphics: NVIDIA GeForce 8 or higher, ATI X1600 or higher, or Intel HD 3000 or higher
    Hard Drive: 1 GB available space
    Network: Broadband Internet connection
    Minimum
    OS: Ubuntu 12.04, SteamOS
    Processor: 1.7 GHz Processor
    Memory: 1GB RAM
    Graphic Card: NVIDIA GeForce 8 or higher, ATI X1600 or higher, or Intel HD 3000 or higher
    Hard Drive: 1 GB available space
    Sound Card: OpenAL Compatible Sound Card
    Network: Broadband Internet connection
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