Adventure Island II ROM Download for Gameboy (GB) on Emulator Games. Play Adventure Island II game that is available in the United States of America (USA) version only on this website. Adventure Island II is a Gameboy emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Castlevania Adventure, The, Adventure Island and Street Fighter II as shown below. Adventure Island II works on all your devices in high quality.