This is less than the Planck length of 1.6 * 10 ** -35 meters so becomes moot. The Planck length would make a natural cutoff for any game physics. :-)
I've thought of writing a game with physics operating at the quantum scale, but I couldn't think of anything interesting. Maybe your character gets to resolve quantum choices but you lose if your improbability goes too high or something (like a life meter).
