XZROMs is a site that downloads thousands of game ROMs for free. All games work using emulators on PC, Mac, Android, and iOS.

xzroms.com/switch-roms/

xzroms.com/psp-roms/

xzroms.com/3ds-roms/

xzroms.com/ps2-roms/

xzroms.com/gba-roms/