Ultima Online: Kingdom Reborn was a client for the 1997 MMORPGUltima Online, created in 2007 with updated graphics. Kingdom Reborn was not considered an expansion pack and could be downloaded for free.
A series of clues provided by developers via an in-game event arc allowed players to find a URL on the Ultima Online website wherein a simple message was contained as well as a Flash movie featuring screenshots of the upgraded graphics.
In addition to the upgraded graphics, there was a newer, more streamlined interface. Some of the changes included hot keys, a scrolling bag configuration and a new character sheet.
As of September 2009, the Kingdom Reborn client has been superseded by a modified version of the KR client, now called the "Enhanced Client". The Kingdom Reborn client no longer works on official shards. The new "Enhanced Client" keeps the rendering engine (including particle effects and light source rendering) from Kingdom Reborn, but not the KR graphics.