Also- I am playing on a macbook. When I put my cursor on the starting screen and scroll down without moving it, the cursor goes into the black. The thing is, I don't die even though the cursor is in the black.
when you get the trophy on level 3, when you click on 'go back to level three' the mouse goes into the black. Not only is it easy to cheat, it is necessary.
I know this was uploaded a really long time ago, but just in case you aren't done with the game yet:
I suggest adding the WASD keys. My down arrow key is broken right now, and I don't think I am the only one. I get kind of upset when a seemingly good game doesn't have the WASD keys available for use.