LibTech1

A long time ago, id Software released the source code for the Doom engine as free software. But only the program was released: the stuff for the game itself was still proprietary, meaning whatever corporation owned the rights could stop selling it forever, or pull it for being too politically inconvenient, or sully its memory by with an MCU's worth of "official" dreck, or anything else, and there'd be no (above-the-table) way for anyone to do anything about it.

A lot of people got together over the years to fill in the rest, so that you could have an entire Doom engine game available as free software.

They succeeded. In fact, they were so successful at getting more stuff to make the game there was a lot of stuff left over, and people couldn't agree on what should stay and what should go. So some people started taking advantage of that whole "free software" thing and made their own versions with what they wanted.

LibTech1 is one of these versions. Its name is a play on "libre" and "id Tech 1".

Differences from upstream Freedoom

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Download

All releases and source will be posted at the repository.

Sporadically updated pre-builds are also available:

Under Construction
Main build (11.9MB) last updated 2024-04-08

Demo build (3.5MB) last updated 2024-04-08

(Email me at verdantdregs at shaw dot ca to pester me to update this if the dates indicated are looking a bit too venerable.)

And, of course, you'll need a source port as well. Crispy Doom is a good start, or you can try Chocolate Doom for a more authentic oldschool experience.

Licence

Copyright © 2001-2024 Contributors to the Freedoom project and the LibTech1 project. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  3. Neither the name of the Freedoom project nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.