I wanted to create a Haunted House attraction similar to the sort of attractions and ghost trains I've seen at Fun Fairs growing up.

The main house is using the Post Apocalyptic Mansion shell by Dekogon but with some tweaked Megascans materials and bespoke meshes for this scene
https://www.unrealengine.com/marketplace/en-US/product/post-apocalyptic-mansion-albert-manor-day-and-night-lighting?sessionInvalidated=true

All illustrations inside the house are the work of - https://twitter.com/KikiVonBubbles

Most props and dressing in this scene is from the Unreal Marketplace.

Characters are Twinblast and Countess also from the Marketplace.

This scene uses the Unreal 4.25 atmosphere system and some custom local fog volumes to give the fog a bit of movement.