This is a shoot-em-up game with parallax effects in the background and a nice simulation of inertia in the control of the ship. You have lots of enemies and two kinds of shooting, slow and fast.
In this game you have two weapon systems: one slow double-shot cannon and one fast single-shot cannon. With each enemy hit by the slow cannon you get one shot added to the fast cannon ammunition supply. After each stage there is a challenge stage where you can also build your fast-shot supply.
HINT: Try so build your supply of bullets for the fast cannon so it can be used in critical situations.
HINT: To get a high score, if you do not miss any shots your bonus score will keep on doubling to 10000 then reset to 000. When at 10000 miss a shot then bonus score will revert to 5000.