Rev Up Those Sonic Cycles

[GrooveMan.exe]

is not like that. both mario kart wii and DS have ported old levels from previous versions and they made them work under the new mechanics, because the core gameplay of mario kart hasnt changed.

we have seen sonic in 2D, isometric, 3D and Rail gameplays that wouldn't allow old levels to work under new enviroments unless the game changed its whole mechanics to fit each level or each level had to be redesigned(defeating the purpose of porting them)

basically, see what happened to Green Hill on SA2.

I'm pretty sure that converting the stages to 3D would be pretty damn easy. Mostly because 2D-only levels (sometimes with 3D linking segments) is pretty commonplace now. About half the stages in Colours (ignoring the VR stages) were in 2.5D. And looked great.