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 Demon Attack and ZZZ-UNK-Zavas that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.