I really like the concept of the game. I also had trouble getting through taking out the gate in mid air. I restarted the game enough times, to hit some goofs. When I went back to those cleared gates, they were gone - they hadn't disappeared in previous retry. Also the scaling buttons would sometimes fail. I'd have to hit E and then maybe Q and then maybe E and eventually it would start working again. I like the doodle/scribble element and the music and sound effects work well with it.