As the commander of Earth's last orbital stronghold, you must build and upgrade powerful defense systems to repel waves of hostile alien invaders. Each level challenges your strategy and reflexes as enemies become faster, stronger, and more unpredictable.

With a wide range of turrets, tech upgrades, and tactical abilities at your disposal, no two battles are the same. Conquer multiple levels across different regions of space, unlock new defenses, and customize your loadout to face increasingly relentless threats. The fate of the galaxy depends on your command. Are you ready to defend the frontier?