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About This Game
To celebrate the 20th anniversary, Valve has released a massive update to the game itself. Added new features, fixed old bugs, improved some visuals, added more options, and integrated the Steam Workshop into the classic game.
Add Half-Life 2: 20th Anniversary Update to your backlog
Import your Steam library in one click, then track what you finish and plan what to play next — free forever.
Last updated Sep 23, 2026