To solve the puzzle with the crates, you must synchronize the crates across the dimensions by bringing the respective crates one level in both dimensions, to the same place. With 2 or more boxes, each box must be synchronized with its partner from the other dimension. Besides tricky field structures, lava and bottlenecks make sure that you need a good strategy to solve the level. Your patience also plays an important role here, as you always have to remember the boxes of a dimension when changing dimensions, as they are no longer displayed. However, if you manage to complete all levels successfully, you will receive a unique reward at the end.