This is a good introductory simplified autoscroller template, with Mario mario. Unlike other scrollers, this uses two alternating frameset platform sprites (odd and even) to go from one background to another. Could this be done with clones?? This autoscrolls the platform, but also sends Mario back, so you have to keep moving forward, but the forward motion isn't enough until you jump. Has forward drag. This has an interesting jump effect. You can only jump if you are touching the green slab. Good for introducing the idea of in air
This was partially cribbed from somewhere else, but I lost track of where. Anyway, it has been heavily redacted since, so I think it is unrecognizable.