Awesome game! I wish you could add a fullscreen option though. Here is some feedback.
At the start there is an exit button. But once you click start on the home screen, you can't get back to it. Maybe you could add a button to go to the home screen?
Nice tutorial also. I actually like it better than normal tutorials because it is so easy and fast. It is better than reading a big block of text and faster than going through a confusing "Try pressing A to jump" tutorial.
Also good job exporting it. I like the .zip file better than an installer.