Found 2 file extension associations related to Ultima Online and 2 file formats developed specifically for use with Ultima Online.
Platform, operating system: Microsoft Windows
Go to: Ultima Online description
Developer: Electronic Arts, Inc.
Electronic Arts software list & details
Developer / company: Electronic Arts
Ultima Online (UO) is a graphical massively multiplayer online role-playing game (MMORPG), released in 1997. It was instrumental to the development of the genre, and is still running today. The game is played online, in a fantasy setting similar to that of the other Ultima games that preceded it.
Note: You can click on any file extension link from the list below, to view its detailed information. The list of extensions used or otherwise associated with the application may not be complete, because many common file extensions on our website, such as jpg (pictures) or txt (text files), can be opened by a large number of applications, or are too general file format. However most, if not all directly associated file extensions should be listed with its appropriate program. Although its likely, that some file extensions may be missing from the list of associated file extensions with the application, yet they can be opened, be part of, or otherwise be associated with the program.
Ultima Online default file extension associations
Comparison table of actions that Ultima Online can perform with each of its associated file type beta
This table might not contain all possible associated or supported file types or may contain incorrect data.
If you need more information please contact the developers of Ultima Online (Electronic Arts, Inc.), or check out their product website.