I like the charm of a one button game. However, I feel the gameplay might have benefited from having 4 direction movement as it can feel that it is based more on luck than skill at times. This kind of feels demotivating when that happens. The rotating map is really a great idea that has lots of potential! I would love to see a map where parts of it move based on gravity so that the rotation would effect the layout! Don't abandon this game once the jam is over :D
Lastly, the background image is in a pretty low resolution so if you plan to use that image get a higher res version of it. Better yet a moving scene would be super pretty. It honestly doesn't even have to make sense because nobody would be focusing on the background and how relevant it is to the puzzling game lol. I think that it would really make the game look more professional.