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Half-Life 2 is free to own on Steam for its 20th anniversary weekend
As part of a full-blown 20th anniversary sale, Valve's landmark title is free to add to your PC library all weekend.
Valve gets the original Half-Life 2 development team back together for a huge 20th anniversary update—and the game is now free on Steam
The surprise update includes a full commentary track for the base game, significant graphical and gameplay updates, and a whole lot more.