i creat 2 object, 1 is ground and box is another, and i add a physic option to both of 2 object, ground with immovable = yes, and box immovable =no. when i test it, the box fall down to the ground, but i found something wrong... the box not touch the ground completely. I can see a tiny crack between box and ground. And yes, i do open construct examples (Physics - rolling platformer) and i saw boxs fall to ground and it touch completely to it without any tiny crack. anyone help me .