what did you use to put on 2 games on gameboy advance?
Hey there! Goomba Emulator with the goombafront.exe program. It led me to put bunch of GB games into a single GBA ROM. It's an emulation, of course, so that's why the WAV samples distort & there's some slowdowns compared to playing those games natively on the hardware. But it's still very playable regardless :)