Your mission is to destroy as many ships as you can. Use arrows to navigate and spacebar to shoot. The deeeper you submerge, the harder it is to hit you. But don not forget to surface, when the oxygen supply is low.
Control the helicopter with the arrow keys. Press space to fire at stuff. You can choose the helicopter color and if you want you can edit a level to play using walls and some obstacles. Also you can select the background, mountains or a cave. There are 30 levels and some endurance levels between them.
Use W, A, S, D keys to move (can be changed through settings menu). Use your mouse to aim and shoot. Move outside of a bubble to jump to a new bubblefield. Destroyed bubble tanks drop bubbles wich you can collect to make your tank stronger. Receiving damage from enemy weapons will weaken your tank. If you are hit and you have no bubbles collected, youŽll be ejected to the safest.
