To install: unzip to your quake epsilon folder and overwrite any existing files. This fixes issues some people had with missing textures/low-quality textures...
Quake Epsilon is a graphically enhanced build of shareware Quake 1 for Windows/Linux/Mac, which can be upgraded to the full version of Quake along with it's mission packs Scourge of Armagon and Dissolution of Eternity by copying the full-version .pak files into the correct folders.
It's made out of the Darkplaces engine and many mods from members of the Quake One forums and elsewhere (these are listed in the readme for each pack) as well as my own work. If it were not for these people, this build would not exist, so consider thanking the authors directly. These builds are legal and do not contain pirated content. Just simple unzip-and-play stuff.
There are four graphics modes, which you can switch between via a batch file ('High' is the default):
Please note that it runs much faster on Windows, so that would be my platform of choice if you have the option.
I don't want to clutter this summary, so more details and all credits can be found in the readme for each pack and on the homepage (http://www.xpfree.org/epsilon).
Well that was exhausting.
I'll thank LordHavoc (author of darkplaces) plus my two testers for their help in wrestling out these bugs while various dependencies etc were discovered.
The main changes are the problem with textures not showing up or being low-resolution on some windows machines/linux distros, which is fixed now.
All known linux dependencies are now included and installed on first run.
There's also texture fixes for mission pack 3, and a bunch of other stuff. See patch for details.