Earth's first interstellar colony in Proxima Centauri is under attack by an unknown alien species. Earth has sent you to save the colony at any cost.
Play through 16 missions that increase in challenge as you progress. Alter your strategy to react to new threats based on what's attacking the map.
Battle nonstop waves of enemies in Endless Mode. See how long you can last before they overwhlem you.
Choose from towers that can arc lightning to destroy ground and air foes, shoot powerful cannon beams to destroy heavy armored units, and more.
Respond to threats by calling reinforcements to fight enemies directly, or overcharging your towers to give them a boost.
Choose new abilities or customize your towers between missions to face new enemies. Optimize your gun turrets, arm your reinforcements, and more.
Experience massive waves of enemies with the full effects of beautiful lighting, realistic textures, and high-quality explosions with no performance impact.