WAdventure fiction
WCaveman
WEpic poetry
WHollow Earth
WItinerarius of Johannes Witte de Hese
WJungle girl
WLost world
WThe Mongoliad
WNautical fiction
WPicaresque novel
WRobinsonade
WScientific romance
WSubterranean fiction
WSuperhero fiction
WSwashbuckler
WVoyages extraordinaires