Ninja - a Japanese spy fighters who specialize in performing tasks behind enemy lines. At this time, militant liberators went to the island on a mission to clear the Khao village from the Green Goblin. Help the glorious warriors right to place weapons tower. In the arsenal of the ninja has several types of weapons, led by shuriken. Destroy enemies, earn gold coins and upgrade strategic towers more powerful. With each step the number of combat enemies will increase.