Earth is under attack!In control of a top secret government base able to destroy spaceships in mere seconds, it is up to you to save the planet from its invaders. When aliens invade, what are you going to do?- Huge range of upgrades- Great variety of enemy ship types to fight against- Aliens, aliens everywhere! Endless waves of alien ships.- Guns guns guns! A wide range of guns available at your disposal!- and MORE!With a huge range of upgrades available for unlock, a great variety of enemy ships each with their own strengths and weaknesses, do you have what it takes to save Earth? Can you defeat the oncoming hordes? The mother-ships lying behind wave after wave of aliens? How long can you last in this fight for survival?