Mega Man ROM Download for Nintendo (NES) on Emulator Games. Play Mega Man game that is available in the United States of America (USA) version only on this website. Mega Man is a Nintendo 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 2, Mega Man 3 and Mega Man 4 as shown below. Mega Man works on all your devices in high quality.