IIRC the NES PPU only supports one background layer. You can just change the scr...

phoboslab on April 19, 2019 | parent | context | favorite | on: Super Mario Bros. has been released for the Commod...

IIRC the NES PPU only supports one background layer. You can just change the scroll position mid-frame to give it the illusion of multiple background layers.

See here for some clever examples of this technique. Everything that's overlapping is done with sprites:

https://youtu.be/ZGyFQ9aRp_U?t=579

ddtaylor on April 19, 2019 [–]

You're right, I was thinking of the SNES which had multiple background layers.