Half-Life 2 turns 20 years old today, and Valve have celebrated by updating it with Steam Workshop support, developer commentary, and many bugfixes.

If you're one of the few Steam users who still doesn't own Half-Life 2, now is your chance to add Valve's blockbuster first-person shooter to your ...

Valve celebrates Half-Life 2's huge 20th anniversary with an update to the game, a developers commentary from Half-Life 2 ...