Jag tänkte ut det. Det är Castle Perilous -serien av John Dechancie.
The Castle Perilous series revolves around Castle Perilous (the name is drawn from the Siege Perilous of Arthurian fable), whose lord is Incarnadine, a sorcerer. 144,000 doors (or "aspects") of the Castle each lead to another parallel universe. Some of these dimensions are magical, while others have little or no magic; one of the latter is Earth. Those who find themselves at the Castle often stay to become residents, and (to their surprise) develop a magical power of their own. This gift is apparently random, and can range from a minor telekinesis limited to lifting pencils to super-enhanced senses to teleportation to full conjuration of matter. The main character, a philosophy major from Earth named Gene Ferraro, gains the power of superb swordplay. His best friends include Snowclaw, a giant humanoid covered in white fur, who originally comes from a polar-like clime, and Linda Barclay, a woman from Earth who becomes a powerful sorceress.
Jag läste Slott för uthyrning .
Once upon a time, the king of a mysterious castle found himself out of place. The odd thing was that the time was the future and the place was New York City! Castle Perilous had been a universe unto itself until it started living up to its name. Now it is a gateway to thousands of universes, each increasingly bizarre and more bewildering. Behind every door there is a room for every fantasy and around each corner a perilous journey for every inhabitant. With its population sent to otherworldly realms and demented demons taking their place, will anyone find their way home in time? The stone walls may be the only stable element in this fantastic fable, as time and place disappear before one's eyes. Pandora's box has never been so big!
Jagharinteriktigtenbrahistoriaföratthittadenheller...plötsligt"Castle Perilous" dykade in i mitt sinne när jag slutade med att skicka frågan, och en snabb Google-sökning fann den.