This version of the emulator is called “VisualBoyAdvance-M” (or Visual Boy Advance Merged), which is a continued effort by others since the original Visual Boy Advance authors abandoned the emulator in 2005.For the most accurate Game Boy Classic and Game Boy Color emulation, I recommend Gambatte in the Game Boy section. If you want to play the latest games on your Mac, you have no choice but to install Windows. The Mac has plenty of games, but it'll always get the short end of the stick compared to Windows.