Mega Man II ROM Download for Gameboy (GB) on Emulator Games. Play Mega Man II game that is available in the United States of America (USA) version only on this website. Mega Man 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 Mega Man - Dr. Wily's Revenge, Street Fighter II and Mega Man V as shown below. Mega Man II works on all your devices in high quality.