Black Squirrel, on 29 February 2012 - 01:11 PM, said:
Just to amplify that "title screens are different" point

crazy
It's actually not as different as that GIF makes it out to be...
Differences:
-Sonic's eyes.
-Shading in Sonic's back ear.
-Shading in Sonic's second spine.
-Smaller banner in prototype.
-Sonic is two pixels below his final position.
-No background (duh) =P
The rest of it doesn't look like it's been changed at all, not even the "THE HEDGEHOG" letters.
EDIT:
S1impikenz, on 29 February 2012 - 01:40 PM, said:
I don't know about you guys, but these similarities certainly suggest that this concept art was indeed drawn in parallel to this prototype build in more ways than we previously thought.
The art you posted still doesn't feature Sonic's final look, whereas the prototype does (hint: look at his top spine), so that concept (as well as the prototype build with Madonna) might be earlier.
This post has been edited by ICEknight: 29 February 2012 - 03:33 PM