Old work but out of (very fond!) nostalgia I want to show it on here anyway.
Enderal - The Shards of Order is a non-commercial total conversion of the game TESIV: Skyrim, using its engine and assets but creating a fully new game with it. For this project I had the pleasure to do the whole world building of the underground slums below the capital city of its universe Vyn, as well as some other dungeons for the player to crawl. I created the blockouts for those location and pushed them to production ready scenes afterwards. Thus I was in charge for the level art, lighting, navmesh, NPCs/their routines and daily behaviour as well as loot distribution.
Assets are done by Bethesda Game Studios, Manufactura and the art department of SureAI.
You can download the game for free on Steam:
https://store.steampowered.com/app/933480/Enderal_Forgotten_Stories/
At first, here's the launch trailer of our project, featuring some locations done by me.
I also created a short mood teaser for the lower part of the game's capital which got published as promotional material during production.