SegaSonic Popcorn Shop is a 1993 vending machine which dispenses popcorn in one of three flavors—salted, butter or curry. The popcorn is prepared (microwaved) in a compartment invisible to the "player." It falls into a cup held in a compartment next to the screen when it's finished.
To play the "game", the player turns a green crank to help Tails get the kernels into the cup while Sonic waves his finger at you. The popcorn, however, is dispensed whether the crank is turned or not.