I found it interesting. However, there's no way of knowing what button affects what. Why use a line renderer to make a little wire connecting the button to the thing it affects. Also, take some pointers from Mark's video on the 4 step level design of mario. I mean the first time i hit the shoot block and the flap rose up killing me I really considered hitting Alt+F4. However, It is a fun game once you understand how it works
This one, In case you're wondering: