Half-Life series is free-to-play until Half-Life: Alyx releases

Valve is celebrating the upcoming release of Half-Life: Alyx by making all games in the Half-Life Series free to play f…

Half-Life' Is 25: Free Game, New Documentary, And Tons Of Updates

Valve makes Half-Life free on macOS for 25th anniversary - Mac Software Discussions on AppleInsider Forums

Half-Life: Alyx gets a Linux release, level editing tools, Vulkan support, and more - Neowin

Valve Is Giving Away the Half-Life Games for Free

Valve Makes Half-Life Games Free Until Half-Life: Alyx Launch in March

Complete Half-Life Series is free to play until Alyx is released - PC - News - HEXUS.net

News - Play Now For Free - Half-Life Series

Half-Life: Alyx Gameplay Videos Show Off Upgradeable Weapons, Hacking, And Gravity Gloves - VRScout

Previous Half-Life Games Are Free Until The Launch Of Alyx

All previous Half-Life games are now free on Steam in the run-up to Alyx's release

Half-Life: Alyx Has Largest Development Team In Valve History