KeyDef 10 (19xx)(JBF) ROM Download can be obtained free for BBC Micro on EmuGames.net only. Play emulator game in English for the USA region. KeyDef 10 is a BBC ROM that you can download to your computer or play online within your browser. You can also download roms such as Blitz99a and Overdrive that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.