Escape had a licensing arrangement whereby it owned the rights to the game design, but Sega retained the Wonder Boy trademark. Because of this, Escape teamed up with Hudson Soft to produce a conversion of the game for the NES, under a new license. To get around the licensing issue, Hudson Soft had the title changed which resulted into "Adventure Island". Although Hudson could have featured the generic boy from "Wonder Boy" as the main character of "Adventure Island", it inserted instead a caricature of Takahashi Meijin (known as Master Higgins in English games). Since "Adventure Island" is based on the arcade version of "Wonder Boy", it does not contain any of the original levels found in the Master System or Game Gear ports. The bonus stage that was reserved for collecting all the dolls in "Wonder Boy" is integrated in this game as a regular area.