doodz, lets camp andraax hez g0t mad l00tz!
Not much to add here...
M8, lets raid Ondoval's lair, there's an uber item in the raid loot.
Even the sanest ( IMHO ) MMO ( namely DDO ) would be a bit too much for Kulthea.
I tried to build a NWN module... and just to transpose a tiny part of Jaiman book took me weeks, and the result wasn't really that good or accurate.
RM would do great as a MMO system, but Shadow World wouldn't even pass the first stage of setting selection... the setting has too much evil, twisted evil, shadowy characters, characters whose behavior is somewhere between the darkness and the light, characters that are utterly mad, characters that are depraved... ( even the Deux ex Machina is ready to blow the whole planet )... nah, it can pass through selection, or it's been so much sanitized ( remember target audience of most of the MMO are teens/ young adults ) that it's not Kulthea anymore.
( just look at what they did to Eberron in DDO, or ME in LoTRO, and so on )