if your talking about sonic 2 for sega.. u can just get it here....
go to the roms section/sega master system/sonic
http://www.emuparadise.org/contact.php
the emulator can also be found there, and also here..
http://www.emulator-zone.com/
go to the roms section/sega master system/sonic
http://www.emuparadise.org/contact.php
the emulator can also be found there, and also here..
http://www.emulator-zone.com/