To celebrate the game’s 20th anniversary, Valve is offering Half-Life 2 for free until November 18th with additional content including developer commentary mode, improved graphics, and more.

Valve is celebrating Half-Life 2's twentieth anniversary, launching a documentary, a significant game update, and making the title temporarily free.

Time surely flies, and Gordon Freeman's followers know it better than anyone. Half-Life 2 is celebrating its 20th anniversary, and Valve has decided to make good on the occasion. The developers have launched a significant update that makes the classic even better. It is available on Steam for free until November 18.

The surprise update includes a full commentary track for the base game, significant graphical and gameplay updates, and a whole lot more.

To celebrate that Half-Life 2 has turned 20, Valve has made it free to claim and keep for a limited time. Not only that, but Episodes One and Two are now included with a huge upgrade.

Valve is honoring the 20th anniversary of Half-Life 2 with a celebration that includes a brand-new two-hour documentary, a developer commentary update, and more. The studio updated fans on the festivities on its website today,

Half-Life 2 is officially 20 years old this weekend, and to mark the occasion Valve has released a special anniversary update, bundling in a brand-new documentary, commentary, the previously separate Episodes 1 & 2,