Back to: Nintendo - Game Boy .bin to .gb Closed (rejected) by: omonim2007. Lodan » 2023-03-03 09:56:48 All GB ROMs from Cowabunga Collection have the .bin extension rather than .gb omonim2007 » 2024-05-14 20:58:15 It's doesn't matter because all those files are in standard GB format.