Welcome to UO Cataclysm


Marketplaces reminiscent of a lost era..

The Frost Elf Den, a dangerous destination for an adventurer.

Custom crafting includes weapons, armor, potions and more!

Lively towns centered on a bustling economy.

Rare custom mounts can be tamed only by the brave.

Perilous journeys into our dungeons await.

Static houses are available for your RP pleasure.

PVP in our custom duel pits where you can risk it all!

Custom Mob Locations with Storylines Around the World.

UOCataclysm is a perfect blend of the best of Sphere 51a, T2A and what many of us consider the 'golden age' of Ultima Online. UOC has spared no expense to design a server which functions with all of the greatness of the original Sphere but powered by RunUO. Be apart of a rich, custom world with a unique flair and quality the most nostalgic can appreciate. Finally a server you can enjoy that lives up to its promises on being true to the original Sphere playstyle!

Cataclysm Expansion III Has been released 5/12/2018!



Town Crier

Cataclysm Turns 1 Year Old! Special Events! 12/13/15 @ 9:00AM PST (GMT -8:00)

We are happy to have reached our one year milestone and to celebrate we will be having a very special Super Sunday! We're hosting events with good prizes and participation prizes for all. We're giving out a very special reward to all those who log in and support Cataclysm! Without you we couldn't do what we love to do, thank you very much for your support!

Come play our events starting at 9:00AM PST, 12:00PM EST.

Super Sunday Events this weekend! 11/15/15 @ 9:00AM PST (GMT -8:00)

We're having a busy weekend here at CUO! We will be having three events this weekend with rare prizes, and participation prizes to all! We're looking forward to it. For more information please reference the forums.

Super Sunday Events this weekend! 11/8/15 Starting 9:00AM PST! ( GMT -8:00 )

Large lineup of events this Super Sunday. 1v1 Tournament, Bomberman, and Britannia Burns! All tournament participants and spectators will receive a rare prize! Good prizes for event winners! For more information, see the forums.

Super Sunday Event schedule this weekend! 10/11/2015 at 9:00AM PST (GMT -8:00)

Another round of our weekly Super Sunday events! 1v1 Tournament, followed by Bomberman. Good prizes to victors, prizes for all! See you there...

Meet the Cataclysm Staff Event Tonight, Friday 10/2/2015 at 8:00PM PST! (GMT -8:00)

Tonight we will be unveiling a new area at our first of this months Meet the Staff Question and Answer event! Mingle with the devs, ask questions about development, and hear news face to face about new patches! All participants receive a prize, meet at the Moonglow Safe Zone and we'll see you there!



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