Tartar

Tartar is a source port based on an early version of the Eternity Engine, forking from the "development beta 5 joel-2", a special build which was originally created to power the Caverns of Darkness partial conversion. It also utilizes some code from and shares various improvements with MBF 2.0.4. Tartar, like the version of Eternity it is based on, only runs in.

Major changes
Tartar adds and revises features which improve the version of the Eternity Engine upon which it is based:
 * Updated Allegro library with improved sound and music support.
 * Optimized VESA low-level graphics routines with improved video card compatibility.
 * Added support for 640x480, 1280x800, 1280x960, and 1280x1024 video modes with aspect ratio correction options.

Specially supported WADs
Aside from Caverns of Darkness, the port is capable of loading and properly playing the assets of the Eternity TC which were released unfinished in 2003. New support has been added for running Chex Quest without a separate Doom IWAD.