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ClassicUO

Open-source reimplementation of the classic 2D client

Clients and Tools Listed Aug 29, 2026
Screenshot of the ClassicUO home page
Home page as captured for this listing. Shown for identification; the site belongs to its operator.

About

ClassicUO is an open-source rewrite of the classic Ultima Online client that runs on Windows, macOS and Linux, at modern resolutions, against the original game files. Most shards in this directory now recommend it over the original executable, and several ship it in their launcher.

Details

Era
Not a shard
Languages
English
Resource type
Client

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