few bugs
first off, i did like the game, this is constructive critisism.
most annoying bug i found was when you restarted after dying it took you to the next lvl, but showed the airport for the first. like i died on 2nd, and when i restarted i had planes coming from 2 directions and it said level 3, yet i had level 1's map / airport.
also give some clearer instructions, maybe a quick walkthrough on how to play it.
another bug i found was sometimes, randomly it would stop me being able to use the control panels, i had to restart the game for it to fix itself.