Collision with physics you have to go through with the game Sandbox. Here, you must have unbiased intelligence to go through all eight levels, each of which differs from the other in a cardinal way. In the first part, a cloth net is stretched in front of you, on which five-pointed stars are arranged in a chaotic order. It is worthwhile to think carefully about the plan of their shifting downwards so as not to break the networks. In the second level, you will be given three containers with dim stars. Each of them should be ignited, which can be done when each fine vessel is filled with fine river sand in a certain order.