This demo is really awesome: https://www.youtube.com/watch?v=gWVmPtr9O0g
There are many interesting demo effects in there. I have no idea how many of then are done. I suspect many of them rely on bitplanes tricks and clever hw raster effects, but I’m not sure Megadrive has got bitplanes.
Let’s start with something easy: Grid Zoom
SkyBerron Through Grid.bin (178.6 KB)