I made the compo art by using UPBGE v0.2.5b which is based on game engine in Blender3D v2.79. And images are just OpenGL viewport renders. It seems to have pretty nice parallax scrolling capabilities.
Here is some pictures from MBC#13; that my parallax scroll renders are based on
I am preparing visualsAid-pack with blend files n images n parallax maps n stuff ; P’