Shown here: mood board (done from Photoshop and PureRef)
In one of my class projects, I did a diorama of sorts of an abandoned factory.
Shown here: blockout arrangement. (Unity engine entirely)
Here is how the completed project looked. Another note - this is more of a diorama study.
Some additional work was made within the Unity engine, as well as some 3rd party assets and other assets I made with Maya / Substance suite. But these shots were taken within the Unity engine using HDRP.
