In his video I look at vertical parallax with FLD, how sprites can use updated X position during rendering, horizontal parallax, and using raster timed NMIs to create a sparse FLD that can efficiently scroll the screen vertically. Source code: https://github.com/martinpiper/C64Public/tree/master/Tusari2/FLDParalax More detail about Shadow of the Beast scrolling: https://youtu.be/aK630qKQMRg