Does anyone know if any MOURN supplements exist? Or fan-made content? I've recently found this gem of a system and I'm really interested in seeing if anyone else has added onto it :D

Heyo! So there’s no supplements, BUT my other game, GRIM, would scratch that itch for you! Here’s a link: https://efangamez.itch.io/grim-retro-fps-ttrpg

It’s inspired by Quake where this one was inspired by DOOM. Thanks so much for the support!!! <3