Hello this is Azure !
Yes - - You guessed it Old School people ! This is King Leoric's Tomb, inside Tabletop Simulator.
I used assets I found on Internet for the tiles and I replicated the Tomb to the best of my ability.
This setup is for my Diablo Campaign, inside TTS (TableTop Simulator).
We use the heroes from Diablo 2 (Diablerie by Wizards of the Coast) and we go into the Cathedral from Diablo 1, all the way down to Hell.
We play every Monday night. The Campaign is planned to last a whole year. We usually complete 1 Floor of the Dungeon, every 2 games. That includes going back to town, buying potions, restocking on arrows, checking new armors and weapons...etc. It's heavily focusing on combat and randomized loot. The skills and abilities come from the Diablerie Booklet as well. Each class has about 30 skills/spells that we must choose from and the advancement is pretty much the same as original Diablo 2. Either you pick a new ability, or you upgrade one that you already have. A new group of 5 Abilities unlock at levels 6-12-18-24-30.