Bonus Game: 
Go to the practice mode and press Start, then quickly press 
Up, Up, Right, Up, Right, Up and Select. If you did it right a 
message will say "Here comes a bonus game." Enter practice 
mode and the new mode will become available. 

Hidden Characters:
Go to the Mode Select screen and highlight Practice. Then press 
Select, UP, RIGHT, DOWN, RIGHT, Select. Then if it worked you 
will see this message "Here comes a new Challenger." 

Options Plus: 
To unlock the OPTIONS PLUS setting, complete the game in 
expert mode. 

Play as Powerful Gouki, Vega and Garuda: 
Gain enough experience that the three pictures of Gouki, Vega 
and Garuda are highlighted in the expert mode screen. Now go 
to the character select screen and hold Start while choosing either 
Gouki, Vega or Garuda. 

Save The Bonus Game: 
Complete the game in expert mode and gain at least 65535 
experience. You will now have the ability to save the bonus 
game on your memory card. 

Taunts: There are three characters that has the ability to taunt their 
opponents. 

Dhalsim: While in the air press Forward, Forward, Up, 
Up, Back, Up, Back. 

Sakura: press Low Punch, Low Punch, Back, Low Kick, 
Low Kick. 

Skullomania: press Forward, Forward+Down, Down, 
Back+Down, Back, Back+Up, Up, Forward+Up and any Punch.