All of the Doom games are apparently on sale right now.
The BFG Edition of 3 has a really good VR mod, and VFR is decent if you're desperate for something kinda like 2016 in VR.
https://store.steampowered.com/app/208200/Doom_3_BFG_Edition/
https://store.steampowered.com/app/650000/DOOM_VFR/