ClassicUO is an open-source, modern client for Ultima Online, a beloved MMORPG originally released in the late 1990s. Designed as a drop-in replacement for outdated clients, ClassicUO supports high performance, modding, and quality-of-life improvements while preserving the game's core look and mechanics. It’s built using .NET Core and runs cross-platform, offering smoother input, faster rendering, and extensibility for private servers. The project is community-driven and continues to evolve in parallel with the fan-maintained ClassicUO ecosystem.

Features

  • Modern .NET-based client for Ultima Online
  • Compatible with most UO private server implementations
  • Hardware-accelerated rendering with OpenGL support
  • Improved performance and responsiveness over legacy clients
  • Enhanced UI with resizable windows and customization options
  • Macro and hotkey support for gameplay automation
  • Modding and plugin support for custom features
  • Cross-platform builds for Windows, Linux, and macOS
  • Frequent updates and active community contributions

Project Samples

ClassicUO Screenshot 1

Project Activity

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Categories

Games

License

BSD License

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ClassicUO Web Site

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Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

C#

Related Categories

C# Games

Registered

2025-03-25
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