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!

Shine On

March 5th, 2021

Greetings Avatars, it's both difficult and hard to believe that I'm writing this today after so many years. In 2008, Tantrik, Insidious and I conceived of the idea of recreating an experience that we had as teenagers while playing on the original Imagine Nation shard. It took us 6 years of development with a huge learning curve to finally get to a position where we felt confident in launching and did so in late 2014. The number of bumps in the road were much greater in the beginning and we had to become experts at everything.. development, world building, server administration, customer support, marketing, and the list goes on. In the early days I'll admit, it was quite rough for us as staff and there were many times I was ready to throw in the towel, but we persevered. 

I had no idea that to create what we had it would require so much more than just the correct rules for the era. A UO shard is a living, breathing entity and requires proper nourishment like anything else. We experienced many naysayers in all those years and although they may have tried, they never broke our spirit. We made many difficult decisions but always had the best intentions of the shard in mind. Many changes transpired in our lives during the course of Cataclysm.. marriages, children, new jobs, new responsibilities. Although it may seem unbelievable to some, we took substantial portions of time out of our lives to create Cataclysm and keep it as professional as it was. While creating our first Expansion I was thinking about designs and content from the moment I'd wake up, on my drive to work, discussing with my colleagues at lunch only to get home and not leave my computer until long after the sun went down. It brought me great joy to see our creation being consumed by all of you. I remember the first smoking treasure chests, how hard it was for players and everyone was developing strategies and how much delight this brought me. To continue with that momemtum was difficult and I'm sure pushed many of our relationships to the brink.

I hope that all the effort we did allowed you to achieve what we always wanted, for you to relive a part of your past and have that nostalgic experience that we all crave. Thank you Tantrik and Insidious for all the work that you've done here, without you both there is no way we would have ever lived up to our dream and vision. Thank you as well to all of our supporters, players and predecessors as without you we'd have never had the success we had. I will always cherish the time that I spent here.

As we kept the torch lit for so many years, I am confident that it is merely dim only to be reignited when the time is right. Goodnight Cataclysm and may your memory continue to shine.





Archived News

Patch 15 Content Release is now Live!

Large patch introduces new systems on CUO! Skill Scrolls will drop on monsters to train essentials, you no longer need to macro to make a completed fighter! MyCUO has been completely reworked with live vendor search, crafting tables and other internal information! Custom Currency vendors are added. Stamina has been revamped. Many other PvP, PvM, Events, bug fixes and content changes are added as well! See the news here.

Support Your Shard, Support Yourself in June on CataclysmUO!

With Patch 15 around the corner, our new marketing campaign is in full swing and has lots of rewards for players who participate! Idling your characters, up voting our reddit post, and a YouTube video contest is encouraged! We are grateful for such wonderful players and thankful for your support! See more details about this campaign and how you can participate here.

Patch 14 is live

The new armor recipes are active! Rare Dye Tubs have been reworked. One dye tub is allowed per account (therefore 2 per person, because everyone may have 2 accounts), and every GM Tailor will be allowed to choose their GM reward tub/color again. Choose wisely! There are many more key updates - Read the full changelog here.

Patch 12 Deploys on CUO

Were proud to announce Patch 12! This maintenance patch polishes many of the features introduced in Patch 11 such as new power hour and PvP updates. It also introduces some needed fixes. New tweaks to weapons will further balance PvP and continue to perfect era accuracy. You can read the details of the new changes here.

Patch 11 Deploys on Cataclysm!

It's been busy on the development side here at CUO! We're deploying our biggest patch yet, you can see the changes here. This all-inclusive update deploys many new changes to all aspects of the game: PvP, PvM, Crafting, etc. New era accurate changes polish the PvP system, making it more dynamic and authentic. Added many new crafting items to Carpentry and Tailoring, and new custom Tailoring armors. Power hour has also been added, and much more!



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Port: 2593




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