My favorite aspect of your game was the audio. Though there aren't many sounds, it all play smoothly and fittingly.
The questions themselves were OK, though with a few replays they become very quick to answer. My recommendation to add replayability to math questions is to have a random range of numbers that are generated whenever a question is picked, with the level of complexity increasing as difficulty increases. Not sure there is anything that can be done to add variety to the other types besides adding more questions, but this takes development time.
Music was a difficult topic for me to answer, on a personal level. Draw was funny, as any drawing whatsoever counts for it. I imagine it would be very difficult to implement a system for recognizing the drawings themselves.
In any case, good use of the concept, and a nice atmospheric feeling of rush to it. Nice job!