I played several VR games here on itch.io. "Tea for God" is a great one, absolutely astonishing. I love that you are able to walk endless in real and can explore the VR world without any teleporting or locomotion.
Beside playing VR games, I develop games on my own. My most popular game is Till Dawn, an apocalypse zombie FPS with some special VR controls.
My second game is Run,Boy,Run. It's an endless runner in VR where you have to build up the world while Danny is running. For this game you will find the source code on github, the link is on the game page.
Right now I'm on my third game which will be a FPS again. I try several new stuff and I hope that I can show more in the near future.