Travel through a castle to collect keys, open doors, and assemble the Knight. Make sure you avoid the slime worms that inch through the halls using pre-determined patterns, or feed them to put them temporarily to sleep. Once you've assembled the Knight, use him to battle the dragon that has taken over the castle. A hideout is available so you can check your progress and take a break from the maze-like castle. The game also comes with a game editor so you can make custom levels to play.