I try yo install it on my Galaxy S4 and it didn'y work.

Had some problems with the buttons not working, but that's probably the fault of my phone.

A Tetris Maker is a cool idea, but it's just way to easy as Iron Pro mentioned earlier. Yes, the controls are a little sloppy too, but I think buttons at the bottom would indeed solve that problem. Although just improving the swiping controls woud probably be the better option