you look at them, and click to see more. i'm sure there are more SMB1 sonic sprite sheets out there, and it will be a moment of time until i find all the "good" ones
they come from this MFGG page: https://mfgg.net/index.php?act=resdb¶m=02&c=1&id=39219 full title: yet even more smb1 style sonic sprites (with tails, knuckles, and sonic exclusive items and objects)
