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The original Half-Life launched on November 19, 1998, and Valve is celebrating the occasion by making the game free until November 20. The game also receives an update that brings back the classic menu, adds HUD scaling, adds an option to reduce mouse latency (they say they completely rewrote...

If for some reason you have yet to get a digital copy of the original Half-Life, now is your chance to do so for free. It's in celebration of the game's 25th anniversary. https://store.steampowered.com/app/70/HalfLife/