Jack and the Beanstalk has the player controlling Jack, a young boy determined to steal the giant's treasures. The game consists of four levels. In the first level, Jack must climb a beanstalk to the top while avoiding worms, spiders, and birds. Jack may obtain a weapon in this level and use it to kill them. In the second level, Jack climbs a series of brick walls while avoiding the same enemies, and collects the money bag at the top and leaves the screen in the upper-left. On level three, Jack climbs the fireplace to get to the golden goose in the cage, then climbs down a ladder to the bottom. Finally, level four has Jack climb up the giant to reach the table, where a huge money bag resides. The game ends when Jack completes his objective or when all of his lives are lost.