To learn how to play, look at the Controls menu on the main screen. The most updated version with all the levels is in the link below: http://scratch.mit.edu/projects/23231415/
This was on my original account http://scratch.mit.edu/users/Supercool789/ and since it is one of my better projects I posted it on my new account! There is currently only one level out, even though it's set up for 5 levels. The reason is because there are a lot of bugs that need to be fixed.