Hammer Boy is a game based on the essentials of HAND HELD-type machines, easy to use, simple but highly addictive. Once the enemy or the object that is going to penetrate our fortress is within reach of our hammer, the blow will finish with it. If a greater number of two enemies enter (in the Spectrum, Amstrad and MSX versions) or five in the other versions, our fortress will be conquered. An equal number of thrown objects that penetrate will cause us to lose a life.