I want to create a (very small) spherical planet that my character could walk around. This is a problem right now since, obviously, once my character gets to the side of the planet.. he falls off! Is there a way in Unity to create a centre of gravity as being "inside" an object (ie: my planet), so that every object wall inward into it, as opposed to fall of its face. here's an example: http://www.youtube.com/watch?v=id1FWB5Oyho The only solution I've thought up so far is to have a bit of unicycle-like system. By this I mean, whenever you walk on the surface of the planet, the planet rotates the opposite direction so that you, as a player, are always on the TOP of the planet. This would work in theory, but any physics-objects from the other side of the planet would fall off the surface as that side of the planet became too far angled down.. Can anyone think of any other solutions?