Double Dragon 2 (U) ROM Download for MAME (MAME) on Emulator Games. Play Double Dragon 2 (U) game that is available in the United States of America (USA) version only on this website. Double Dragon 2 (U) is a MAME emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Double Dragon, Super Dragon Ball Z and Cadillacs and Dinosaurs (U) as shown below. Double Dragon 2 (U) works on all your devices in high quality.