Metroid Fusion ROM Download for Gameboy Advance (GBA) on Emulator Games. Play Metroid Fusion game that is available in the United States of America (USA) version only on this website. Metroid Fusion is a Gameboy Advance emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Metroid - Zero Mission, Metroid - Fusion (FlashAdvance) and Classic NES - Metroid as shown below. Metroid Fusion works on all your devices in high quality.