This is an unusual type of prototype. It's a prototype scene! This is an unfinished and unused screen from "Night of the Werehog" the CG animated Sonic short used to promote Unleashed / World Adventure. As you can see, the details havn't been added to the animation. Everything is really basic. It's also a scene that didn't end up in the final short. Here, Sonic & Chip are shown playing a Dreamcast (no memory cards in the controllers, nor cords) in the house.