A Circle Among Squares

You're a circle. You're the good guy. But you're surrounded by squares. Some are irrelevant. Others are useful and/or annoying. Then there are the black squares. They want to kill you. They are the bad guys. Be a good guy and pulverize those baddies, will you?Survive and shoot all enemies in 200 levels (or make them shoot themselves). Each level cleared opens the next one permanently (autosave). E…