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) to offer you the greatest co-op experience. 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 co-operatively. In addition, you can add more content by installing third-party mods, such as ROCK 24 and MINERVA: Metastasis, then playing them in Synergy!
Citadel Levels
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Description
In Synergy (version Release 1.0), you are able to play through the entire Half-Life 2 campaign with your friends.
awesome i cant belive they added the full half life 2 campain.good job hope to see more great work in the future
It is a great mod :). However some levels are glitchy.
I wanna play with my friends =)
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