Kattobi! Douji [b] ROM Download for Nintendo Famicom Disk System (FDS) on Emulator Games. Play Kattobi! Douji [b] game that is available in the United States of America (USA) version only on this website. Kattobi! Douji [b] is a Nintendo Famicom Disk System emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Kaettekita Mario Brothers (Disk Writer) [b], Green Beret [b] and Transformers - The Headmasters [b] as shown below. Kattobi! Douji [b] works on all your devices in high quality.