All Half-Life games are free to play ahead of Half-Life Alyx's launch

Prep for Half-Life: Alyx's release by playing through the entire Half-Life saga for free.

Half-Life 3 could still happen hints Valve

Every Half-Life game is free-to-play on Steam for the next two months

Half-Life: Alyx Won't Have Any Multiplayer Modes, Valve Confirms

Every Half-Life game free on Steam in anticipation of Alyx

Watch: Half-Life 1 Inside Alyx Is An Amazing Fusion Of Gaming History

Half-Life: Alyx delivers the watershed moment VR gaming needs

Half-Life Alyx mod 'Levitation' adds new story and 5-hour campaign

Every classic Half-Life game is now free on Steam

Valve Has Many “Games In Development” - Gameranx