The aim of this game is to have players upgrade everything - all you get to start with is a text screen, and from there, you'll have to buy your way into the awesomeness. Don't like the graphics? Buy a graphic upgrade. Bored with no sound? Purchase the music. Can't find the gameplay? Buy the menu buttons. Not sure what you're supposed to do? The further you go in the gameplay of this simple yet heavily customizable shooter, the better it gets - can you reach 100% completion? You'll have to unlock the mysterious ending, so fight hard.