>>316641184
I'll preface with the fact that I'm not a simfag but I believe there's DCS, MS Flight Sim (when VR support arrives), Assetto, and I think Project Cars on the sim front. Hopefully your G2 will have tracking good enough for anything else you want to do with it beyond sims though, seemed pretty abysmal last few times it was posted. 

Can't think of any co-op RPGs, outside of specific vrc worlds. There's not too much co-op stuff in general actually which is a bit sad, mostly shooters of various kinds. You'll mostly find nostalgic stuff like that as gamerips in vrc worlds.