Because doom 3 bfg is open source it has been modded to work in full roomscale with motion controls on the htc vive. I really didnt expect this to be as good as it is until i played it... Its super scary in vr and the gunplay is on point. Really cool im loving it... Heres a vid of someone playing it...
http://www.youtube.com/v/qBqw_Fb3lbE&hd=1
https://www.youtube.com/watch?v=qBqw_Fb3lbE
Def one of the coolest things to happen in vr. Lovin it.