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Synergy Syn
STEAM GROUP
Synergy Syn
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224
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Founded
August 8, 2007
ABOUT Synergy

Half-Life 2 Cooperative Mod

Play with your friends through the Half-Life 2, Half-Life 2: Episode 1 and Half-Life 2: Episode 2 campaigns.
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Synergy Version 44
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Founded
August 8, 2007