Nehrim: At Fate's Edge

Nehrim: At Fate's Edge is a total conversion mod for TES IV: Oblivion. Explore the namegiving land of Nehrim with dense forests and deserts, delve into old crypts and caves, and experience an unusual, multi-layered storyline that takes place beyond known patterns of good and evil.

A mod originally released n 2010 that has been updated over the years since then. It was added to steam alongside the release of version 2 in 2020.