I saw this tool mentioned recently along with the release of https://github.com/ExOK/Celeste64 . It's mentioned as a tool that was used during Celeste64's development so it's clearly not just for Quake engine based games.
It seemed at first glance like it was pretty specific to Quake engine games, knowing how to load .wad files, etc. I was wondering how it might be adapted for a custom game. The answer is here, in case anyone else is curious:
nerpderp82|2 years ago
a_e_k|2 years ago
https://trenchbroom.github.io/manual/latest/#game_configurat...