At the Street Fighter 3: New Generation character selection screen, highlight Yun and press any Kick button. -From: jkool@enter.net

At the Street Fighter 3: Second Impact character selection screen, highlight Sean and press Up. -From: jkool@enter.net

Successfully complete Street Fighter 3: New Generation or Street Fighter 3: Second Impact on any difficulty setting. Then at the character selection screen, highlight Sean and press Up(2). -From: jkool@enter.net

Reach the final boss in Street Fighter 3: Second Impact without loosing any rounds and getting a perfect at least three times. Then, defeat Gouki with super arts or a perfect and Shin Gouki will appear. Finally, defeat Shin Gouki to unlock him. To play as Shin Gouki, highlight Gouki at the character selection screen, then hold Start and press any punch or kick button. -From: s_john40@hotmail.com

Enter the option screen of either game and hold L + R. Keep those buttons held until the extra options appear at the end of the code. Highlight the "Game Option" selection and press Left(2), X(2), Right(2). Highlight the "Button Config" selection and press Left(2), Y(2), Right(2). Highlight the "Screen Adjust" selection and press Left(2), X, Y, Right(2). Highlight the "Sound" selection and press Left(2), Y, X, Right(2). If done correctly, the "Extra Options" selection should now be unlocked.

Pause the game and press X + Y.