The harmless green little monsters lived quietly in their valley, they did not bother anyone and nobody touched them until the time. But there were evil incredulous people who did not believe that monsters could be kind. They decided to exterminate the entire tribe, throwing the settlement with heavy metal balls. Help the poor girls get rid of the balls. It is important to destroy the red balls, and the blue ones will not do any harm. Remember that the number of shots from a monster gun is limited. At the top of the screen you will find all the necessary information. You will also shoot from above so that the core freely falls down in Iron Ball.