Adventure Island

Trivia

Although the games are indeed identical, Adventure Island is not exactly a "blatant rip-off" of Wonder Boy. The original arcade Wonder Boy game was developed by a company called Escape, who later became known as Westone. Hudson optioned the rights from Escape for a NES port of the game, but Sega still owned the "Wonder Boy" title, forcing Hudson to come up with a new title for the NES version, hence "Adventure Island."