First off, the game looks incredible! But, as others have mentioned, the camera controls (or lack thereof) make it very hard to play. It seems like it would be quite fun to roll around as a d6, but I couldn't really get into it because I was constantly fighting the camera.
Otherwise, it seems really nice. Well done!
Ideally, I'd have liked a third-person camera (by which I mean a camera that's always behind the player and pointing in the forward direction, with the mouse turning the die), but I don't know if that runs counter to your intended experience. But I'd say that direct control is only helpful if it's obvious which direction the die will go if I press "W". Otherwise, a better tracking camera would be best.
Essentially, I'd want a camera that allows me to line up runways to the ramps so that I'm not missing it all the time.
