Another amazing NES looking game here. I loved the use of the music implemented in this game and the art just gave it an amazing feel for the game. For just 4 levels, this turned out to be an amazing gameplay here with a really polished look. The parallaxing in the background was also a really amazing touch to the game. Amazing work on this!
Also, for some reason, I ended up crashing once when playing the game. I'm on Mac and I'm using Mozilla Firefox as my web browser.