I think having 4 would be good regardless of this new idea . Interesting concept for sure <| sep |> How would you even do HalfLife in VR , though ? Something that makes HL and HL 2 really great is that they never takes the metaphorically controller out of the gamer ' s hands , but there ' s currently no way to explore vast worlds in VR by walking around , even with the Vive . So you could invent a perfect omnidirectional treadmill to solve that problem , but that ' s really restrictive , because then you can ' t jump properly or knock the player into the air , which are big components of HalfLife gameplay . Furthermore , hopping into a vehicle would take forever , because you ' d have to get out of the treadmill and sit down in a seat imagine the big action setpiece at the end of HL 2 Ep 2 in VR , where you ' re hopping in and out of the car and running and driving around everywhere . No , if there ' s one series which really should have the first highquality , fulllength VR game , it ' s Portal . With Portal , you could give an ingame explanation for teleporting every few feet using a simple miniportal system , and it ' s not an FPS series in which running around and precision shooting aren ' t key elements . It ' s no wonder Valve decided to make The Lab set in Aperture Science .