Crystals of Planet Niberium

"Planet Niberium turned out to be rich in rare precious crystal. Space Corporation Sigma decided to extract these crystals. Corporation Sigma, as an interested party, using the currently available technologies, released a new search NKXgr-701 Robot series. This robot could change the gravity of certain types of matter by breaking the usual physical laws. It was decided to adjust the antigravitator to change the gravity of the stone masses, under the rubble of which the crystals were lying. Also, beetles could be blocked with stones in an enclosed space. The Corporation Sigma goal is to collect all the crystals and take them out... There are 20 levels in the game.!