Produced by: Julien Langer
Website: Abysmal Engine
Releases:
* Abysmal for Ubuntu (off-site)
* Abysmal for Windows (Installer) (1.2 MiB, 154 hits)
* Abysmal for Windows (ZIP) (1.3 MiB, 118 hits)
* Abysmal for Linux (AMD64) (1.1 MiB, 90 hits)
* Abysmal for Linux (x86) (1.1 MiB, 97 hits)
* Abysmal Source (1.1 MiB, 110 hits)

The Abysmal Engine is an attempt to create an Ultima Underworld 1/2 and System Shock engine for modern operating systems. It will still require the original Ultima Underworld or System Shock data files to run.

Abysmal is a successor to previous such attempts at creating an engine for the Underworld games, and builds on the work done by The System Shock Hack Project, Underworld Adventures and Underworld 2 Revival projects.

It is still at a very early developmental stage (the author warns that none of the games are actually playable), but seems to be making decent progress. An iPhone 3GS version even appears to be in the works!

Releases:
* UW2Edit v1.1 (9.4 KiB, 51 hits)

A simple utility for editing character statistics in Ultima Underworld 2.

Produced by: Jonathan Rimmer
Website: UWE Homepage
Releases:
* Ultima Underworld Editor (156.7 KiB, 169 hits)
* UWE Source (2.6 KiB, 101 hits)
* DPMI Memory Manager (40.5 KiB, 99 hits)

A 2D, DOS-based editor for both Ultima Underworld and Ultima Underworld 2. Also available is the source code. The program may require the DPMI Memory Manager because of the Allegro libraries that were used in its making.

Produced by: Peroxide/Telemachos
Websites: UGCK and Viewer
Releases:
* Underworld Viewer (84.8 KiB, 128 hits)
* Underworld Game Creation Kit (20.2 MiB, 131 hits)

Although Peroxide has ceased to be, some of their old projects are still kicking around on the Internet. The Underworld Viewer is a simple utility that renders all the levels of both Ultima Underworld and Ultima Underworld 2 using whichever acceleration mode you prefer so that you can view them and wander through them. It may also be possible to load the level models into a 3D rendering program, if the images on Peroxide’s site are any indication.

And Telemachos, formerly of Peroxide, never seems to run out of ways to keep busy. Building off of the Underworld Viewer, he produced an actual editing kit with which to edit different aspects of Ultima Underworld, as well as walk through all the levels and (possibly, if the screenshots tell the truth) test-play them.

Produced by: Marc A. Pelletier
Website: LOW @ Sourceforge
Releases:
* LOW 0.4 (Windows) (304.9 KiB, 43 hits)
* LOW 0.4 (Linux) (107.1 KiB, 27 hits)
* LOW Source (512.8 KiB, 31 hits)
* LOW 3D Models (7.5 MiB, 34 hits)
* LOW Music (18.7 MiB, 30 hits)
* LOW Sounds (3.8 MiB, 32 hits)
* LOW Data Files (1,002.5 KiB, 34 hits)
* LOW DLL Files (Windows) (445.1 KiB, 37 hits)
* SDL Libraries (external site)

Labyrinth of Worlds (LOW for short) was a cross-platform re-write of Ultima Underworld 2 “from the ground up”. Development on this project has unfortunately ceased, but its Sourceforge site is still active and there is source available for download, as well as a host of demos for different systems.

The latest version of this remake (dated 2002) features 3D models of the characters.

Produced by: Origin Systems Inc.
Website: Origin Systems (redirects to the Ultima Online site)
Releases:
* Official Patch (618.4 KiB, 48 hits)

This patch corrects several plot-stopping bugs in the disk-based version of Ultima Underworld 2 only. All versions of the game that shipped on CD should have the patch installed already.

Produced by: Moscow Dragon, Sir Cabirus Dragon
Website: Sir Cabirus
Releases:
* NT Patch (44.4 KiB, 91 hits)

Windows NT (and NT-derived systems like Windows 2000) are not always game-friendly platforms. Moscow Dragon came up with a patch that allowed Ultima Underworld 2 to run under the Windows NT/2000 environment, and this was later expanded upon by Sir Cabirus Dragon to support Ultima Underworld 1 as well.