Valve is getting ready for the March release of Half-Life: Alyx, their full-length VR game that’s not Half-Life 3.

To get ready for Half-Life: Alyx, all Half-Life games are free to play for Steam users until the launch of Alyx

Half-Life: Alyx is a full-length, prequel game that takes place just before the events of Half-Life 2 (remember in Half-Life 2 where Alyx’s dad gets kidnapped?). Oh yeah, did we mention that Half-Life: Alyx is a full-on, virtual reality game? You read that right.