Level Skip
     In any game, hold L1 + R1 + Up/Left + Triangle + Circle + Start +
Select.  If  done correctly, you will hear a loud grinding noise. Left
go  of the buttons immediately and hold L2 + R1 + X + Triangle + Down.
You should hear a word spoken if done correctly again. Now, to advance
a  level,  just  press L1 + L2 + R1 + R2. You will advance to the next
level as soon as there are no enemies on the web.

Play Tempest 2000 or Tempest Plus
     Simply  get the number 1 high score and enter the name "YIFF!" or
"H V S"

Trippy Mode
     In any game, hold L1 + R1 + Up/Left + Triangle + Circle + Start +
Select.  If  done correctly, you will hear a loud grinding noise. Left
go of the buttons immediately and hold L2 + R1 + X + Triangle + Up.