Released
Oct 3, 2008
Platforms
WindowsLinux
Last updated
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Free to play
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playable

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Listed as free to play on Steam.

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Recent updates

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  1. Developer post

    Rebel Rush 2025

    Join us for Synergy's annual Rebel Rush event where we play through the entire Half-Life 2 campaign and its episodes with a significantly increased player limit. The Half-Life Discord will once again be hosting this event. Many performance optimizations have been applied to Syner

  2. Developer post

    Synergy 25.03

    d2_coast_08 : Fixed return level change not working. ep2_outland_03 : Fixed vortigaunt not getting on the elevator near the end of the level. ep1_citadel_01 : Fixed missing vortex particle effect on bridge puzzle. Increased voice chat quality by switching to the Steam Voice codec

  3. Developer post

    24.12.2 Update

    General Updates Fixed player ragdolls not rendering. Fixed vote menu map list being empty (backported to 24.12.1) Fixed crash on player spawn on Linux servers (backported to 24.12.1) Fixed "Failed to prepare map" error dialog on custom maps downloaded from server. showtriggers_to