In this Unity 2D tutorial we will start setting up a cool effect for our 2D game called a parallax background. A parallax background makes a 2D environment look 3D by the way it looks. There will be multiple background layers that move at different speeds which tricks the brain into thinking there is a 3D environment.

Blog Post:
http://www.mybringback.com/tutorial-series/14057/unity-2d-game-development-16-creating-a-parallax-background/