Some time back I saw a fan made conversion of Planescape for the storyteller system, i.e. world of darkness/Mage. I tried looking for it today, does anyone know where it is?
Planescape, Dungeons & Dragons, their logos, Wizards of the Coast, and the Wizards of the Coast logo are ©2008, Wizards of the Coast, a subsidiary of Hasbro Inc. and used with permission.
Is this the link that you are looking for?
http://www.geocities.com/dragon-dreamer/ps/index.html.