An alien invasion has begun, and you--with your skills in global strategy and squad tactical combat--are the only one who can save the world. The game includes role-playing elements that allow your soldiers to improve as they gain more experience. You'll manage squads, bases, and interceptions while fighting against aliens and mutants for control of territories. With each mission, you can use more than 70 weapons, undertake more than 100 different objectives, and modify orders while the game is paused.