Why can't you go back to the title screen from the menu. Why does there have to be an 'Extra' menu. Why can't you just choose characters from where you select sonic tails and knuckles?
I wanted to keep the game "mega drive" like with limited menus.
F2 resets the game, so you can go to the main menu at any time from anywhere.
Extra characters are "non canon" so they are in the extra menu. However, once you get the the all clear save you can start with whoever you want from the "continue" action.