Board Thread:General Discussion/@comment-679780-20170331170636/@comment-477304-20170331204636

Mania may look like Mega Drive game aesthetically, but there's a lot more too it, for one the sprites are much more detailed and they do a Mode 7 thing when going around loop-de-loops (as in, they don't use sprites of Sonic moving in a diagonal, but rather rotate the sprite as it moves). These, and some other things, would make it unlikely to be able to run on a Mega Drive without a considerable downgrade.