Since the game is no longer sold officially, you have to rely on archival and community-driven sites:
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: You can install an older version of Windows (like Windows XP or 7) within a virtual machine on your Mac to play the game in its native environment. GBA Emulation : There was also a Game Boy Advance version of The Princess and the Pauper . You can download the GBA ROM from Internet Archive and play it using a Mac-compatible GBA emulator like 3. Flash Mini-Games barbie princess and the pauper game mac download
Therefore, a direct "Barbie Princess and the Pauper Mac download" (a .dmg file) does not exist legally. However, you can legally run the Windows version on your Mac. Since the game is no longer sold officially,