The only thing interesting about this game is that it's not by R2. And can we please finally get negative star ratings ? Those type of games really call for it.
The game really could use some stronger "snap to grid" machanic. You can solve a puzzle, but it won't count because one piece is half a millimeter off the grid.
As others have pointed out: The only challenge this game offers are the controls. Could be a nice game with improved controls, level and puzzle design.