Hit all the green spheres to pass to the next level. It sounds easy, but the obstacles will multiply as you progress in the game! The violet spheres will give you special power-ups; the blue ones will give you only extra points. The metallic ones are indestructible, and the big green sphere can only be destroyed at the end of each level, but it will give you all kind of power-ups every time you hit it.
Move the mouse to point, click to shoot.