If you go to The mud connector You will find a fair few, most of which are accessible.
Off the top of my head I've heard of muds for the wheel of time and a rather famous middle earth mud, plus on www.whitestic.co.uk there are mentioned a few muds that welcome active players.
Lastly, Cleft of dimentions, though not set in a recognizable world, does have a lot of stuff fromold nintendo games like Mega man, Zelda, Marrio, Secret of mana etc.
hth.
I'll confess I prefer original ones myself, but you might want to give these a try.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)