Now, I was wondering this for a long time - can you accurately recreate sprites/tiles from these low-res mockups? One of the bigger ones was Dust Hill, a Zone originally planned for Sonic 2 but scrapped due to time limits. And now, I know, there is a hack (multiple, I believe) that somewhat accurately recreates it. But after comparing it with the mockup, I have found some inaccuracies. So I couldn't help myself but ask this question - is there a way to figure out what palette the original mockup - or prototype of Dust Hill used? Is there a good way to trace the pixels? I've already tried it once, and I managed to figure out which one of the Sonic sprite the picture used, but not much aside from that. I'm more of a spriter and I'm all about design and art direction, so I would be pleased to find out if there is a way to somewhat closely learn what it originally looked like. Here's two pictures of the mockups that I believe are the highest resolution ones around. I think that the brighter one is the most believable as the colours match Sonic's initial sprite in Sonic 2 the most of the two.