
Synergy is a Half-Life 2 Modification that enables you to play through the Half-Life 2 series and many other 3rd-party campaigns cooperatively with friends.
| Released | Sep 1, 2005 |
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| Status | Mod |
| Platforms | PC (Microsoft Windows)Mac |
| Genres | ShooterPlatform |
| Themes | ActionScience fiction |
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| Game modes | Co-operative |
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| Perspective | First person |
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| Keywords | modern warfarezombieshelicoptersteamartificial intelligenceboss fightexplosionsteam achievementsmodern militarysteam workshop |
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