Eye of the Beholder for the Commodore 64/128 is an incredible unofficial conversion for the C64 and 128 of the famous dungeon crawler.The original Eye of the Beholder was released in 1991 for the Amiga and MS-DOS. The masterpiece created by Westwood Associates was never ported to the Commodore 64, but a group of enthusiasts led by Andreas (JackAsser) Larsson succeeded where the original developers failed.
Source: N4G PC Eye of the Beholder C64 (Commodore 64) Game Review