Description: Extraterrestrial spacecraft to attack the Earth ,to build a strong national defense and stop them. Your task is to build a strong defense system to save the planet and the survival of the strong wave of alien attack 40. Use the mouse to control the game. use 5 bullet towers, upgrade to max, then 6 freeze, upgrade max and at last build the ultra tower, max score at medium.
Highscore is not available for this game, you can play and submit your score with our highscore games