Justice League Heroes - The Flash ROM Download for Gameboy Advance (GBA) on Emulator Games. Play Justice League Heroes - The Flash game that is available in the United States of America (USA) version only on this website. Justice League Heroes - The Flash 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 Justice League - Injustice For All, Gunstar Super Heroes and Metroid - Fusion (FlashAdvance) as shown below. Justice League Heroes - The Flash works on all your devices in high quality.