Wonder Boy III - Monster Lair (JUE) [c] ROM download is available to play for Sega Genesis. This game is the US English version at EmulatorGames.net exclusively. Download Wonder Boy III - Monster Lair (JUE) [c] ROM and use it with an emulator. Play online Sega game on desktop PC, mobile, and tablets in maximum quality. If you enjoy this free ROM on Emulator Games then you will also like similar titles Hunter X Hunter - Wonder Adventure and Harvest Moon A Wonderful Life.