The official Ultima Online Expansion client is now available! The new client contains many new features to help bring the old school custom Sphere look and feel back to life! With a new user interface, artwork, features, and content, we've prepared a patch that will bring waves of nostalgia and promote our unique custom theme. The new client files are mandatory and required to experience all that the Expansion release has to offer. We no longer support and have deprecated the original v1 installer.

Get the new REQUIRED Installer or files here -

You may download the new Full Installer here: http://downloads.cataclysmuo.com/CUO_Setup_Full_v2.exe
- Download this new installer.
- Install to the same directory where you originally installed to.

OR

You may patch your existing CataclysmUO client by downloading the Update Patch here: http://downloads.cataclysmuo.com/CUO_Patch_v2.zip
- Download this patch.
- Extract the contents into the same directory where you installed to originally.