No one has yet mentioned Raw Data. Go into the settings, under advanced control settings, and switch the control style to "hold" (which it points out will be more difficult to play using... that isn't the point); I seriously started to feel like I had hands in the world: the user interaction of this game sets a new bar. (I will also mention Fruit Ninja, as many people have played the game on their phone, so getting to play it in VR is more immediately engaging.)