During the production I was in charge of creating, rendering and setting up the buildings parallax interiors, along with Simon Hughes and Nathan Doye.
You can find more information on how these work here : https://www.gamasutra.com/view/news/332409/Game_Tech_Deep_Dive_A_window_into_Playground_Games_latest_shader_development.php
https://www.artstation.com/simonhughes3d
https://www.artstation.com/nathandoye