Metroid (Rev 1) [b] ROM Download for Nintendo Famicom Disk System (FDS) on Emulator Games. Play Metroid (Rev 1) [b] game that is available in the United States of America (USA) version only on this website. Metroid (Rev 1) [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 Metroid (Rev 2), [BIOS] Family Computer Disk System (Rev 1) and Kaettekita Mario Brothers (Disk Writer) [b] as shown below. Metroid (Rev 1) [b] works on all your devices in high quality.