Super Sonic & Hyper Sonic in Sonic 1
Play as Super Sonic or Hyper Sonic in the Sonic 1.
To unlock Super/Hyper Sonic, you can collect all of the Chaos Emeralds, or select an option on the title screen to enable them from the get-go.
To TRANSFORM, you jump with one button, and then press a different one while in the air. This will turn you Super. Doing it again will turn you Hyper, and doing it yet again will revert you to normal.
As Always, Good Luck and Have Fun.