2D Space Shooter meets Tower Defense! Defend your planet from asteroids and aliens and survive the Megadeath Star bosses with your Surface Cannon and build orbiting turrets to shoot down the invaders! Build custom missile projectiles!Build custom Satellite Turrets!Upgrade your Surface Cannon And keep that Planetary Shield up! Player Facilities:Surface Cannon : point and click to aim and fire the Surface Cannon, upgrade it to improve its range, accuracy, and even add barrels for more fire