This time, they mean it. The legendary game Half-Life turned 25 today and to celebrate, it’s free in the Steam store for the next three days (until Steam Dawn on the 20th, 1800 GMT).
The soundtrack DLC is also free and if you don’t own the other Half-Life games, they’re all on sale for less than a buck each (except Alyx).
!addlicense asf s/965364,s/50863
Enjoy the game.