What is the pinnacle of the Sonic franchise?
I say Sonic 3 and Knuckles (if I can say that...)
The reason I say that is it's 2D (which is a must, as far as I'm concerned), it has three different power-ups to choose from which do different things, it has a save function, fun bonus levels (four, if you count the special stages), three playable characters and different level sets for each, or at least different areas for each, and a motive to complete the game wholly with everybody to get Hyper Knuckles, Hyper Sonic, and Hyper Tails. Besides, it has the best music of all of them.
What do you think?