Downloads
About UOFiddler
Welcome to UOFiddler, a powerful tool based on the Ultima SDK for viewing and modifying almost every Ultima Online 2D client file.
UOFiddler has been an essential tool for UO developers and private shard administrators for many years. Whether you're creating custom content, debugging client issues, or building an entirely new world, UOFiddler provides the tools you need.
Source code is released under the Beerware License.
Features
- Art & Gumps
- Browse, export, and import static art, items, gumps, and textures with full transparency support.
- Map Editor
- View and edit terrain, statics, and map data across all facets of the game world.
- Animations
- Preview and modify creature and character animations frame by frame.
- Multi Editor
- Design and construct custom multi-tile structures like houses and boats.
- TileData Editor
- Edit item and land tile properties including flags, weights, and names.
- Sound & Speech
- Browse and export game sounds and speech files.
- Hues
- View and edit the color palette used for dyeable items.
- Plugin System
- Extend functionality with plugins including UOP Packer, Mass Import, Compare Tool, and more.
Requirements
Version 4.11.0 and newer:
- .NET Desktop Runtime 8.0.x
- Windows 10 or newer
For building from source:
- Visual Studio 2022 v17.10+
- .NET 8.0 SDK
- .NET desktop development workload
Download .NET 8.0 at: dotnet.microsoft.com