Lighting Test:
After settling on the general layout and lighting for the whitebox level in Unreal Engine 4, I started the first lighting test by setting up a "horror" style scene including flickering lights and floating dust.
The flickering lights were created with blueprints and set to flicker on randomly generated intervals while the game is in play.
The dust itself is a particle system that uses basic mesh collision with a slight emissive applied for visibility and mood.
