Cool concept, and I really liked the art style. Oddly, to me, the rusty nails were the easier ones to get in the middle (I realized there is a way to align the nail perfectly but I couldn't understand how it got there so I'd always switch directions trying to make it closer to the green area when the hammer was about to hit). I'd also recommend smoothly speeding up the hammer time, so it makes the gameplay more difficult as time goes on, and it could make it even more challenging to master the game. But, for really, I really enjoyed this game, great job, it's really fun to play