Similar to OpenWM there is a project reimplementing the Gothic 1&2 RPG, which is in my humble opinion the much better game
See:
https://github.com/REGoth-project/REGoth
Latest video (obviously inspired by OpenMW):
https://www.youtube.com/watch?v=DX92f8CrjrE
Works on Linux (+Windows, Mac if that's your thing) and Android.