Double Dragon (UB) ROM Download for MAME (MAME) on Emulator Games. Play Double Dragon (UB) game that is available in the United States of America (USA) version only on this website. Double Dragon (UB) 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 Double Dragon 2 (U) as shown below. Double Dragon (UB) works on all your devices in high quality.