Sp_openbg ROM Download can be obtained free for MAME on EmuGames.net only. Play emulator game in English for the USA region. Sp_openbg is a MAME ROM that you can download to your computer or play online within your browser. You can also download roms such as Thin Ice .int and Tintin On The Moon that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.