Play the Half-Life series for free on Steam

Valve wants you to get ready for the release of it's VR-only title, Half-Life: Alyx, by playing the entire Half-Life series. They say 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". So from now until March, the entire Half-Life series is free to play on Steam.

That includes:

• Half-Life
• Half-Life: Opposing Force
• Half-Life: Blue Shift
• Half-Life 2
• Half-Life 2: Episode One
• Half-Life 2: Episode Two
• Team Fortress Classic

Half-Life: Alyx has not been announced for Linux at this time. However, it's not unrealistic to expect that it will be available at some point, given Valve's history supporting Linux.

Check out the Half-Life Complete Bundle for more information.