Will you survive to the end? You're under attack and you must defend your DS-no matter what it takes. Strategically build up your towers to battle against a non-stop wave of attackers. Eliminate Creeps! Tactically place protective towers of differing defensive and offensive capabilities throughout the playing field, all while invaders known as "creeps" attempt to march across the screen. Hundreds of Levels! Through strategic placement, carefully create mazes to ambush the invaders and protect their holdings through hundreds of challenging levels.