Really cool game, it was a little confusing, a tutorial or explanation would be nice. Otherwise I liked the game, well done! :)

Really fun puzzle game! I too got stuck on level 3, but mostly picked up on the mechanics. Still not 100% why the shape doesn't always change when something moves, but I'm sure I'm just missing something. If all of these are definitely solvable, then you did a brilliant job on laying out the puzzles. I'm usually pretty good at games like this, maybe I'll come back to see if I can beat level 3 another time. Also really enjoyed your pixel art style and the audio blended in really well with that retro vibe. Overall, great submission!

Very fun little game.  I'm stuck on level 3, though - what am I missing?  I am not sure what the mechanism is that triggers the shape change of the moon.  

Your design is really simple but quite effective.  I liked the menu you put together and the sound effects were perfect for the game style.

Can't wait till I figure out how to get to level 4 :)  

Like @ddrosler said, I didn't really understand what was going on until the third level or so. I just pushed things until it worked. It would have been nice to have a simple walk through level at first with associated text for me to understand the whole sun/moon angle thing. I got stuck on level 4 but after others helping me put me in the right mind set I was able to do 5 and 6. Really liked the concept! Music would have been a touch nicer. Great game, thanks!

For the time limit these are some amazing puzzles!

Took me about 10 minutes to figure out how it worked, but when I figured it out I was like "WOAH". Super creative puzzle game, could've probably used a quick tutorial or message on screen about how it works, though otherwise it's great. Really interesting puzzle mechanics, and figuring out how to get the right position of the sun with the moon is so rewarding. Good puzzle game, nice work :)