The idea is that this machinery works behind the scenes to keep everything going, with more than a nod to the gif factories of old where many moving parts gave the impression of functionality. I am referencing their retro look, making the most of isometric projection to create an exaggerated, false 3D yet adding dither to downgrade the image depth.
The conceit is that the various cubes and spheres create and impart energy in a state of perpetual motion.
The parts were all made at artapp.uk using various creators and effects on-site then composited in Cavalry.