Title page: A Basic Fantasy Role-Playing Game Adventure For Characters of Levels 4 to 6 Rising out of the vast emptiness of the blue ocean is a lush green island filled with ancient beasts and scattered strange ruins waiting to be explored. from the introduction: Monkey Isle is a "lost world" setting - an island inhabited by prehistoric beasts and other strange creatures. It includes background material for the GM (Game Master) and several ready-made adventures. The intent is to give the GM an island to use for their own adventures. It is a place the gamers can visit and revisit as they desire. This adventure was designed for use with the Basic Fantasy Role-Playing Game, available for free from www.basicfantasy.org, but can in fact be used with a variety of “old school” fantasy RPG systems.