Hammer Boy has to defend himself with hammer blows from the enemy invasion in each of the scenarios in which the action takes place. STAGE 1 THE FAR WEST. In the Far West we will defend our fort from the Apache attack. The Indians, in addition to trying to enter, will throw torches at us that we must extinguish with a hammer. There are only four points where enemies can enter. STAGE 2 THE SOUTH SEAS. Our ship is being attacked by pirates who are besieging us from the sea and firing cannon fire from their ships. We will have to destroy the cannonballs before they explode on deck. STAGE 3 THE CASTLE. We are in the Middle Ages, our castle is attacked by the enemy army, armed with a catapult. Enemies will be able to enter through five points of the castle. STAGE 4 THE SPACE BASE. We defend a base on the surface of a hostile planet. Aliens in rocket engines, floating mines and flying saucers that we can destroy with laser cannons.