Homebrew Campaign Settings

These are various homebrew campaign settings that can be found on the web.

Urbis - A World of Cities
Heptovania - An excellent "Tolkienish-vanilla" fantasy RPG setting (1500+ articles!)
Farland - Another rich d20 setting with a nice website
The Hyborian Age - Conan's world for d20 RPGs
Amethyst - An original mix of fantasy and sci-fi using D&D3e + D20 Modern
Eyru - A d20 world of fantasy inspired by the Iron Age Celtic cultures
World of Khoras - An extensive fantasy campaign setting for any RPG system
World of Highland - An alternate Earth fantasy setting, with its own RPG system
Terra-Viejo - Another alternate Earth fantasy setting, but for d20
Dage - An Earth-like Dark Ages fantasy setting, for AD&D
Palaestra - A d20 fantasy setting of "Byzance against Faery"
Tempest - A WIKI vanilla d20 fantasy setting, to which you may contribute