The game kept ignoring my keyboard inputs and/or reading inputs for keys I wasn't pressing. (And no, I didn't lose track of which was the right/left hand.) I often got stuck spinning because it wouldn't accept a grab from my other hand at all, often meaning one of the blocks would knock me down before I could move on. Kinda frustrating - and not in the good way. If I'm going to rage at a game I want it to feel like MY fault I'm failing.