Dude. Neat! I never knew. Thanks for the info! :)

So, I'm curious about this. Been playing Sonic 3 for years. Sonic 3 & Knuckles is probably my favorite Sonic game of all time. I've never noticed any physics differences that are stated in the rules. Are there any examples? I took to Google, but it just wants to show me Sonic 4 stuff. o.o;