I finally finished Enderal - a gigantic Mod for Skyrim that is by all acounts a new game.

Tried to explore and do as much as I could, ~100 hours later I will take it over Skyrim any day. Actual characters, actually well crafted story with amazing ending, incredible level design and writing and... I just can't believe it's a non-commercial effort.
How did they pay the dozens of voice actors? In der German version some of them are proper film and TV actors.

But however they managed it, I am incedibly grateful for their work. Those 100 hours were mostly thoroughly enjoyable and the story and characters will stick with me for a while.