Brilliant concept!
Most commenters praise the art, which I agree is great, but for me the core gameplay steals the show!
I was surprised how much depth (pun intended) there was, even though there aren't many card types.
After I figured out the opponent's strategy I could consistently win, but I had so much fun before getting there.
I only realised the moon indicated the turn order after reading the page's description, which was after I put the game down, but I figured the mechanic through gameplay so it didn't matter much.