Get the client.

Connect with ClassicUO and Razor on Linux, OpenUO on Windows, or try the Android MobileUO test. Game artwork and world data are obtained separately.

Android ARM64 test · version 211

Wild giant beetle animal animation fix and Android update notice; test build Game data is not included.

Download Android test APK 24.9 MB

SHA-256 0587d70d6e4e6c274f359f4a2dda1bec9ae83c7ef683a75de841cd46a11833c6

This build fixes giant beetles animating like spiders when imported game data lacks mobtypes.txt. Beetle walk and standing animations passed rendering checks.

On first use, choose a ZIP of your legally obtained UO Classic data when the AssetHub profile asks for it. This is an experimental debug-signed build that still needs testing on a physical phone. Install it over an earlier test version to keep imported game data and profiles; do not uninstall first.

Download modified source and AGPL/BSD notices 5.2 MB · SHA-256 e803f8de880aaed436ae82303e532929f404fb90174ca5e67750c71cf3d666ad

ClassicUO + Razor for Linux x64

One installer adds native ClassicUO, Razor Community Edition, and an application menu entry, configured for assethub.ca:2593. No Wine is needed. Tested on Ubuntu 26.04 with X11 or Xwayland; Classic game data is obtained separately.

Download Linux installer 30.5 MB

SHA-256 a34e044c459b5f735330ce03d0f6fa0b804a3b1042042b514446329a312422b6

The Linux launcher checks for updates when you start the game and offers verified releases with notes. If the update service is unavailable, it starts your installed client. Close the game before installing an update. The latest release includes the giant beetle display fix and the X11/Razor startup fix.

Download modified Razor source and build notes 4.6 MB · SHA-256 29767e9f27d0a582d6dd1e53dc0808fde756b8eceb8688d5b95a3946ee4e2866

OpenUO for Windows x64

Configured for assethub.ca:2593. Includes the client and a launcher; it does not include Ultima Online game data.

Download Windows client 35.3 MB

SHA-256 bfc20f99116fa72c11c04e0c7e272d2e550fc5a5814ad7499d19b789e868b390

Before you play

  1. Get the game data. Use a legally obtained Ultima Online Classic installation from the official Ultima Online download page. Our downloads do not contain those game files.
  2. Install and launch. On Linux run chmod +x AssetHub-UO-Linux-x64.run && ./AssetHub-UO-Linux-x64.run. On Windows extract the ZIP and open Launch-AssetHub-UO.cmd. Both launchers search standard locations and remember the selected data folder.
  3. Create your account in game. Enter a new account name and password at the client login screen. Then return here to view your characters.

Razor Community Edition 1.9.77.1 is included in the Linux installer and starts with ClassicUO through Mono. The Windows OpenUO package has not been verified with Razor and does not include it.

Game connections are open at assethub.ca:2593.

This product includes software developed by andreakarasho — ClassicUO source, Razor source, and OpenUO source.