It took us a while to understand how to play, but once we got past that hurdle, the game is interesting and different. As feedback, we think it would be good to make it easier to select and rotate elements, for example, by eliminating the use of the numbers 1 to 5 and the R key and using the icons at the bottom to select with the left click and rotate with the right click (the rotations would appear at the bottom and would already be selected when rotated). Then placement would be with the left click and deletion with the right click, as it is now.