Click the green ⚑ Use the arrow keys to play, and at the end of the game, press space to change gravity. There are 20 levels. Here are the two previous games: http://scratch.mit.edu/projects/52468866/ and http://scratch.mit.edu/projects/49071656/ You can use full screen (it's all vector).
A few things are from @happypizza's prequel. The music is from Professor Layton And The Unwound Future