Good, but could be better
Good Game!!! A realy good idea. But I died sometimes, when there suddenly appeared a tank from nowhere... that was a bit annoying.
maybe you could enlarge the whole map or let the people choose from different maps.
A combo system would be nice. As example: You attack a orange tank. you answer the first question right and then comes the next question but you have less time to answer and so on, till it's destroyed or till you screwed up.