Mega SWIV ROM Download for SEGA Genesis (Genesis) on Emulator Games. Play Mega SWIV game that is available in the United States of America (USA) version only on this website. Mega SWIV is a SEGA Genesis 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 - The Wily Wars, Mega Bomberman and Rockman Megaworld as shown below. Mega SWIV works on all your devices in high quality.