Astronoid is an extraordinary arkanoid style game. This game based on the war with aliens of 2306-2311 years, which ends with human victory due to discovering of plasma spheres.
Your goal is to destroy alien turrets by using of your plasma sphere. You can control sphere direction with your starship which can deflect sphere in required direction. But your goal not only to deflect sphere. Turrets shoot different missiles to your starship and you should evade them to survive.