Sonic the Hedgehog 2

At the title screen, select Options. Highlight Sound Test then play the following music and sounds: 19, 65, 09 and 17. You will hear a ring-collecting sound for correct code entry. Then press START to return to the title screen. Highlight 1-Player, hold the A Button and press START. You are directed to Level Select Screen. On the sound test area, enter ''01 09 09 02 01 01 02 04''. Now, play the following sounds in this order: 04 01 02 06. You will hear a familiar tune, confirming the Super Sonic code was done correctly. Select a level, hold A and press START. Once you collect a minimum of 50 rings in any level, Jump (Press A) to activate the Super Sonic.