You're assigned to dock a remote space station. Dock the top-secret archeological mining station and find out why it hasn't given a sign of life in months then fix the problem.
Build towers and survive through 51 hardcore waves of aliens that heal themselves, haste other enemies, split into more enemies and freeze your towers.
Build towers to defend the town center and upgrade them to more advanced tower types. These towers are capable of protecting more with powerful weapons. It applies to fire, ice and lighting magic towers.
