A campaign setting for Basic D&D that appeared in some articles in Imagine magazine, TSR's UK office's official magazine, which mostly reprinted articles from the US Dragon magazine, but also included some new stuff.
The world is flat. Otherwise, it's pretty generic, if well defined. Fondly remembered by British neckbeards, all but unknown to the rest of the world. Someone hacked together a single document with all of the content.
|Dungeons & Dragons Campaign Settings|
|Basic D&D:||Mystara (Blackmoor - Hollow World) - Pelinore|
|AD&D:||Birthright - Council of Wyrms - Dark Sun - Dragonlance |
Forgotten Realms (Al-Qadim - The Horde - Kara-Tur - Maztica)
Greyhawk - Mystara (Red Steel) - Planescape - Ravenloft - Spelljammer
|3rd/3.5 Edition:||Blackmoor - Dragonlance - Eberron - Forgotten Realms - Ghostwalk - Greyhawk - Ravenloft|
|4th Edition:||Blackmoor - Dark Sun - Eberron - Forgotten Realms - Nentir Vale|
|5th Edition:||Dragonlance - Eberron - Forgotten Realms - Greyhawk - Nentir Vale - Ravenloft|