The program is a battle to save your town from the evil giant that has invaded your peaceful village.  Your objective is (with the assistance of two friends), capture the giant at street intersection 8.  The giant's goal is to reach intersection 1.   The intersections are numbered from 1 to 8, the intersection at the bottom of screen is #1.  You and your friends can only move left-right or upwards.  The giant can move in any direction.  Both sides can only move to adjacent intersections.