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Call of Duty: United Offensive servers

0playing across0servers right now

The 2004 expansion, still running Base Assault and Domination on a small but steady set of community servers.

Runs on cod.pm · internal code CoDUO · released 2004 · install guide

Call of Duty: United Offensive

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CoDUO questions

What do I need to play Call of Duty: United Offensive online?

Call of Duty: United Offensive servers run on the cod.pm client. Install cod.pm over a legitimate copy of the game, then either use its built-in browser or paste a connect command from the list above into the in-game console.

How many people play CoDUO right now?

The counter at the top of this page is live. It is read from the cod.pm master server and refreshed every 20 seconds, so it reflects the players actually connected at this moment rather than a daily average.

Is Call of Duty: United Offensive still worth playing in 2026?

The 2004 expansion, still running Base Assault and Domination on a small but steady set of community servers. Population moves with the clock. European and North American evenings are consistently the busiest windows for every title on this site.

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Each title below has its own live server list. Titles are grouped the way the community actually splits them: by the client that keeps them online.

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