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UO Cataclysm

Custom era · RunUO

Custom Worlds Listed Aug 29, 2026
Screenshot of the UO Cataclysm home page
Home page as captured for this listing. Shown for identification; the site belongs to its operator.

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About

UO Cataclysm is an Ultima Online freeshard built on custom content rather than any single official publish, running on RunUO, with a PvM focus. The shard advertises staff-run events. Players connect to login.cataclysmuo.com on port 2593. The shard says it has been running since 2008. It was on uoisnotdead.com's seven-day active list when this was compiled.

Details

Era
Custom era
Ruleset
PvE only
Emulator
RunUO
Features
Staff-run events
Languages
English
Running since
2008
Login server
login.cataclysmuo.com
Login port
2,593
Discord invite
discord.gg/uretDWA

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