Synergy

Game Details

Synergy is a Half-Life 2 multiplayer modification with multiple gameplay modes, mainly focusing on cooperative play.


This game is directly available via steam

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This game requires that you have Steam installed and you own a Source engine game such as Counter-Strike: Source, Half-Life 2, or Day of Defeat: Source. Click here for a full list of games that meet this requirement.

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Get together with friends and fight your way through individual levels or play through campaigns, including Half-Life 2.



If you prefer competition, play the Teamplay or Deathmatch game modes. In Teamplay games, you join the Combine or Rebel team and fight against the opposing team with friendly players and NPCs.