Just a small thing, but don't take the player to level select after they clicked on next level. Add a seperate button for level select and when the player clicks on next level, take them right to the next...
@diphycue
when you get a new question, the game tells you if your last question was correct or wrong. @metagamer
Your score is the time it took you to take the test, so really on this game we are trying to get a low-score. I am not sure if your final score is affected by incorrectly answered questions.
I won my first game. Try this strategy:
The biggest ship is 5 squares, so after firing your first shot place your next one five squares away. Now always shoot 5 squares apart from your last shot. Sink any ships you might encounter. After you have sunk the biggest ship, move on to the size of the next one, so place your shots 4 squares apart from each other, and so on. Works for me most of the time, against human players and computer games.
The rotation of the field looks nice, but makes it confusing to make good turns, sometimes the field will rotate right before the button is pushed, resulting in a collision.
Mars is too far away. After buying all upgrades you have to do too many launches, just to money to buy enough boosts for the trip to mars. It gets a little boring and annoying after some time.
The mutant birds are behind the car (at least i think that's what it is) and you never get a chance, simply because you can't see them coming and don't know where to shoot. Fix it...