In my experience, with the rift anyway, you need to make a game where you’re sat in a seat or cockpit of a vehicle. The moment you’re adding to the movement with mouse/keyboard type controls, you’re going to need a sick bag. I’m working on a Vive game right now where you’re confined to, and can walk around in the dimensions of your chaperone space - as long as framerate keeps up I can develop/play it for hours. The FOV thing seems interesting though - i’ll give it a try.