Press Up, Up, Down, Down, Right, Left, Right, Left, 1 on the title screen.
Contributed By: Captain Doormat.
Sound Test Menu
Press Down, Down, Up, Up, Left, Right, Left, Right, 1 at the title screen.
Contributed By: Tom_Wake.
Enter the Sound Test Menu, then press Down, Right, 1 (street fighter move) and Sonic will perform a Hadouken.
Contributed By: oblivion from aoc.
Select Sonic and press Up + Jump. While pressing those, continuously hold Up while jumping, and it Sonic will appear to be glittering. He will be invincible until he stops running his fastest.
Contributed By: Veinz.
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