||Your ship pivots around a polar coordinate system. Type in the angle (In degrees) that you want to turn and your ship will slowly move in that direction.
You can not fire and shoot and the same time, so you must be quick with your angle measurements.
Collect gems for upgrades, and don't let your health reach zero.
Destroy all the missiles from a level and you will receive a bonus round in which you can collect even more gems to help buy yourself upgrades.
Different gem colors have di