So I was going through the Sonic News Network wiki and found some of this stuff (Check attached files) and I was wondering if somebody could give me some info about it. I would really appreciate it. Thank you and bye for now!
Like I know what they are but I'm talking about game development info.Most of these pictures you shared are concept and provisional artworks.
The latter are used as placeholders (before the final box art is finished and finalized) in magazines and promotional material, it's like how screenshots from game protoypes end up in said places as well.