Wonder Boy III - Monster Lair (set 4, Japan, System 16B, FD1094 317-0087) - MAME - Platformer

Strange enemies are attacking your lands and have advanced weapons that they use to destroy everything, so you must take either the awesome Leo or the incredible Princess Purapril on a cool mission to fight these invaders to snatch their weapons and save your lands from total destruction. In the brilliant Wonder Boy III - Monster Lair you must fight the colourful and crazy creatures and defeat them all to save the land!