Call — Of Duty United Offensive Custom Maps

: One of the most active archives, hosting over 430 maps specifically for Call of Duty and the United Offensive expansion. It also features recent CoD UO Map Archives (some with over 310 maps) uploaded as recently as March 2025.

: A unique, large-scale map that remains a nostalgic favorite for long-time players. Glass Floor Maps call of duty united offensive custom maps

map "yourmap" longname "Your Map Name" type "deathmatch ctf baseassault" : One of the most active archives, hosting

: Fan favorites like Rats Kitchen , where players fight among giant cereal boxes and refrigerators. Glass Floor Maps map "yourmap" longname "Your Map

In the game menu, go to Mods > None . Start a multiplayer game. Select "Create Server." In the map list, scroll past the stock maps (like mp_harbor). Your installed custom maps will appear usually with the prefix mp_ or uo_ .

If you are searching for today, you will find archives spanning hundreds of files. However, to save you from the garbage files and broken links, here are the "Mount Rushmore" maps that defined the golden era.

Before World at War , UO mappers built the gritty, snow-covered ruins of Stalingrad. This map is a sniper’s paradise. The twist? The Germans start at the high ground of the Grain Elevator, while the Russians spawn in the sewers. The custom scripting here allowed for "tunnel spawning," a rarity in 2004. The map’s grey, desolate color palette still looks hauntingly artistic today.