Play a very challenging, high-intensity, futuristic tower defense game for older kids / teens where you are in charge of defending your server from waves of attacking aliens. Use all the kinds of turrets and weapons to defend your base. Can you last until the end of the 50th wave? Reasons to play this cool, strategy-based survival game: Exercise your strategic decision-making skills and tactical battle skills as you carefully and meticulously build turrets in defensively-advantageous positions along the pathway. Experienced fans of tower defense games should enjoy the challenging, fast-paced action here. Collect money by killing aliens and upgrade your turrets for extra power to kill ultra weaponized enemies. Win the game and have Fun.