Unknown Realm: The Siege Perilous is a new 8-bit medieval fantasy role-playing game that starts out in the 80's for PC and Commodore 64. It is designed in the spirit of classic RPGs such as Ultima & Bard's Tale. Boasting a size of 16Mbits, it is the largest 8-bit RPG to be made on a cartridge ever.
Check out their website at:
http://www.stirringdragon.games