Half-Life: Alyx is coming in March, and we are celebrating early by making all games in the Half-Life Collection FREE to play for Steam users, from now until the day it launches!

Half-Life: Alyx is set before the events of Half-Life 2 and the episodes, but the games share characters and story elements. The Half-Life: Alyx team believes that the best way to enjoy the new game is to play through the old ones, especially Half-Life 2 and the episodes, so we want to make that as easy as possible.

From now until Half-Life: Alyx launches, visit the game page of each Half-Life game to install it and play as much as you want, right up until the day Half-Life: Alyx is released!

If you already have Steam installed, you can click the following links to start playing now!
Half-Life
Half-Life 2
Half-Life 2: Episode One
Half-Life 2: Episode Two

Also included in this bundle and available to play for free are:
Half-Life: Opposing Force
Half-Life: Blue Shift
Team Fortress Classic

If you don't have Steam, you can download it here.