Picking a squadron before beginning.
More planes can be bought in the shop.
Drawing lines to command the plane around.
Attacking the enemies.
Earning gold as enemies are destroyed.
Two planes in action
Sometimes gears are dropped - these can be used in the shop.
Bomber in action
Planes can level up.
The lightning flash fires missiles.
The big bomb wipes out all enemies.
Hearts are lost as enemies reach their destination.