Infinite Lives
Select, A, Down, B, Up, Down.
Infinite Projectiles
B, A, Right, B, A, Right, A.
Infinite Time
Up, Down, Up, B, Left, B.
Invulnerability
Right, A, Down, Right, A, Down.
Level Select
Select, Up, Up, Select, Left, Left.
Special 1
Up, B, A, Down, B, A.
Special 2
Left, A, Left, B, Left.