This is a 3D version of the well known game of Sokoban. It is a puzzle where you must push boxes, and a Sokoban level is solved when all boxes are on the storage location.
Almost all implementation of Sokoban keeps the original 2 dimensional design, i.e. the levels are arranged on a grid displayed on a plane and the player moves the character horizontally and vertically through this grid. Most of the versions claimed to be 3D limit the 3D experience to graphics only, and use the same 2D mechanics of the original Sokoban.
This version allows real 3D dimensional level, and the objects can move along a third dimension.