Punch in the code at the Sonic/Tails selection screen. You'll get a free emerald.
Effect Code Free Emerald Up, Down, Up, Down, 1, 2, 1, 2, 1, 2
Go the the title screen and punch in the code.
Effect Code Level Select Up, Up, Down, Down, Right, Left, Right, Left, Start
At the Sound Test screen, press down, down/right, right, 1 or 2 . Sonic will throw a fireball
Contributed By: Numbuh 128bit.
Get the 5 Chaos Emeralds to see a special background during the credits,featuring Sonic and the Emeralds you found! (Only Sonic can get the Chaos Emeralds).
Unlockable How to Unlock Secret credits Get the 5 Chaos emeralds in 1 play. (Can only be done as Sonic).
Contributed By: GOLD_sonic.
Go the the title screen and press Down, Down, Up, Up, Left, Right, Left, Right, 1, 2, Start. You should now have a sound test. Note that this code is often confused with the Level Select Code.
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