An evil/mature campaign world for evil PCs
It's not necessarily; I think the "Book of Vile Darkness" themed adventure in Dungeon was extremely well done, and one of my favorite modules in a long time. Plus, stuff like George RR Martin, Steven Erikson, Joe Abercrombie, Glen Cook and others certainly show that fantasy fans have a market for "mature content" that isn't sophomoric. The RPG side of fantasy publication hasn't really managed to execute their stuff quite as well, or at least as successfully.I'm still wondering why "mature content" has become a synonym for "sophomoric"...
Plus, stuff like George RR Martin, Steven Erikson, Joe Abercrombie, Glen Cook and others certainly show that fantasy fans have a market for "mature content" that isn't sophomoric. The RPG side of fantasy publication hasn't really managed to execute their stuff quite as well, or at least as successfully.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.