Daggerfall Unity is a recreation project letting you easily play and mod The Elder Scrolls II: Daggerfall on modern operating systems, like Linux. It recently reached a major milestone, version 1.0. Below is a link to a video showing how good modded Daggerfall (originally released in 1996) can look in 2024:
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).