I like the idea, but the game really needs a proper tutorial, or at least better instructions. Also, the controls feel really awkward to use, especially if you're trying to do anything more complicated than sending a fireball along X or Y axis, especially since you have to pause the game to see the controls(and have no way of seeing what you've already entered). I don't even want to think doing anything elaborate enough to require arrays... I think I'd just have to write the sequence down and then hope you don't make any typos(it really doesn't help that you have to press both keys at the exact same time or the game registers it as a block).