The id Tech engines were developed by id across many years and used in a multitude of games. Most of the source code from these engines has been released under some version of the GPL. These are grouped together here because they are mostly of historical interest and it is unlikely for me (or anyone) to use them directly. - [[id Tech 1]] - [[id Tech 2]] - [[id Tech 3]] - [[id Tech 4]] # Derivatives - Valve's [[GoldSrc]] and thus [[Source Engine]] and [[Source 2]] as well - Ritual's ÜberTools - [DarkPlaces Engine](https://icculus.org/twilight/darkplaces/readme.html) (open source) # Map Editors & Tools ## id Tech 1 - https://www.doomworld.com/classicdoom/utils/editors.php - https://www.doomworld.com/forum/topic/113164-whats-the-best-most-up-to-date-map-editor-to-use/ id Tech 2 - https://trenchbroom.github.io/ - https://www.youtube.com/watch?v=DMJ7i4nuMVA - # References - https://github.com/orgs/id-Software/repositories?type=all - https://en.wikipedia.org/wiki/Id_Tech