Direct Bozo through the three lands of Havoc collecting in each a piece of the Crown of Ultimate Darkness.
Control Bozo's direction with N,S,E,W keys. Brigands will be encountered in either the Tomb or the Ruin where they may attack. If they do, you may retreat by hitting any key. If you stay and fight, and the number of Brigands reaches zero before you do, you have won the battle and will be rewarded with one of the following:
A map (so you won't get lost)
A bottle of potion (to protect from the plague)
A sword (so you can fight off the dragon)
A piece of crown (you may now enter the next land by travelling west off the screen)