I had fun! The first puzzles were simple, the next ones actually had me thinking. I felt like you took the concept and properly made it into a different and special thing by creating a creative set of levels
I gotta say that maybe the finish door or the background could have another color or sprite. Since the door was light green and the background white, it made it difficult to see where the door was sometimes, mainly in levels where the camera is zoomed out. But despite that, it was really great!