Nice game, I really liked the graphics and the cool mechanic with very simple two button controls! It is pretty difficult to get into the game. You might want to make the start of the game much simpler. Always keep in mind that you have play tested your game quite a bit and you are much better than anybody who tries it the first time. If your game start feels too easy for you, then it is often the right difficulty for somebody who plays the game for the first time.
Well done!