Just found out about Starwind, a Star Wars themed total conversion for Morrowind that can be played using the FOSS OpenMW engine (i.e. it can be played natively on Linux).
I haven’t tried it myself, but I watched this video about it: https://www.youtube.com/watch?v=Qo-NO61jcX8
It can be downloaded from nexusmods for those who want to try it out on OpenMW: https://www.nexusmods.com/morrowind/mods/48909
The OpenMW engine has been used to make some incredibly impressive stuff.
One example being the progress towards supporting other games such as Fallout 3/NV
https://www.gamingonlinux.com/2019/02/openmw-progresses-towards-supporting-oblivion-skyrim-and-fallout-plus-shadows-are-back/
Though I have no idea how much progress has been made since 2019 and when videos floated around demonstrating some of what has been added.