Defend your space ship by building and upgrading your turrets, shoot the aliens down as you get through 3 massive galaxies of this strategical shooter.

Build turrets in the open slots of your space ship, click the turrets to view upgrade options. You control the big turret on the back yourself. Use the mouse to aim and shoot. In between levels you get the chance to collect upgrade points with your little gathering ship. Read the game guide for more tips.