Thank you! I was thinking of trying a VR game. Is that kosher? Seems like all the submissions from last year were built for web
The reason why most submissions are web games is that everybody can run them as long as they have a web browser, and you can just play them with no download or installation. That means you'll get more people playing your game, more people rating your game, and more feedback.
If your game requires VR hardware, that'll reduce your potential audience by a lot, but if you're okay with that, there's nothing in the rules against it.