Kara-Tur is a far-eastern campaign setting for Dungeons and Dragons, created by David Cook in the first edition splatbook Oriental Adventures. It was almost immediately retconned into the Forgotten Realms setting, as is the fate of all things. The setting was never really updated for 4e, although it did get an entire issue of Dragon Magazine dedicated to the area, and as of yet nothing has been forthcoming for Dungeons & Dragons 5th Edition besides a brief mention that it might be where a PC from far away originally hails from.
The setting comprises a healthy collection of far-east historical periods, including warring states period Japan (Kozakura), Imperial China (Shou-Lung, complete with Great Wall and Triads), and the lazily named Tabot (a holy-child-monk-emperor worshipping mountain theocracy). It even has a shitty-wall hating, loose collective of steppe horsemen (although not as yet a grand uniter of clans), who even got their own spin-off sub-setting called The Horde.
|Dungeons & Dragons Campaign Settings|
|Basic D&D:||Mystara (Blackmoor) - Pelinore|
|AD&D:||Birthright - Council of Wyrms - Dark Sun - Dragonlance |
Forgotten Realms (Al-Qadim - The Horde - Icewind Dale - Kara-Tur - Maztica)
Greyhawk - Jakandor - Mystara (Hollow World - Red Steel - Savage Coast)
Planescape - Ravenloft (Masque of the Red Death) - Spelljammer
|3rd/3.5 Edition:|| Blackmoor - Dragonlance - Eberron - Forgotten Realms |
Ghostwalk - Greyhawk (Sundered Empire) - Ravenloft - Rokugan
|4th Edition:||Blackmoor - Dark Sun - Eberron - Forgotten Realms - Nentir Vale|
|5th Edition:||Eberron - Forgotten Realms - Greyhawk - Ravenloft - Ravnica|
|Third Party:|| Dragonmech (3E) - Dragonstar (3E) - Golarion (3E) - Humblewood (5E) |
Kingdoms of Kalamar (2E/3E/4E) - Midgard (3E/4E/5E) - Midnight (3E/4E)
Ptolus (3E) - Rokugan (3E) - Scarred Lands (3E/5E) - Spellslinger (3E)
Wilderlands of High Fantasy (Basic/3E)