Well cut up character sprites are allowed, so I assumed the same was true for backgrounds (My use case is just using parallax to make stars and galaxies in space, so all layers beyond the black base would be not-opaque
Parallax is definitely 2D tho imo, it's just a technique to emulate depth, like LOD or distance blur
Just to clarify, I meant "it starts approaching that 3D territory" in that much like our ruling for 3D, I don't know how you would achieve this effect with a single asset, so unless it can be done solely in engine with a single image, it's not allowed.
It's not about the nature of the technique, we also don't allow a second blurred version of an image unless done solely in-engine, for example.
