So here is the link: http://www.scirra.com/arcade/action/2853/square-platforms
I did this in about 7 hours after I went through both the basics tutorial and the first beginner platformer tutorial I found.
Its just 2 levels plus a game over and title screen, and a single looping music track. However, the levels loop and keep score and how many stages you finish. How high of a score can you get?