I just went to steam to check out there sales and i am confused:- I thought every steam game in the VR section would be compatible with Oculus Rift? How do we know which games are working or are they not compatible anymore? unless it obviously says rift compatible.
Best way is to go to the discussions page for any game your interested in and see if anyone has asked about touch support. Someone usually has and an answer given. Like @Applecorp said a lot will work, just not entirely correctly. Some just don't work properly at all.