Amplitude
Motion blurring:
Press R3(4), L3(4), R3 during game play.
A sound will confirm correct code entry.
Alternate field shape:
Press L3(3), R3(3), L3, R3, L3 during game play to
change the field into a circular shape. A sound will
confirm correct code entry. Enable the code again to
get a shape similar to that from the game Tempest.
Transparent panel surfaces:
Press L3, R3, L3(2), R3, L3, R3(2), L3 during game play.
Start a new game to have transparent black panels.
Random gem positions:
Press X(2), Left(2), R3(2), Right(2) during game play.
A sound will confirm correct code entry.
Monkey gems:
Press L3(4), R3(4), L3 during game play.
A sound will confirm correct code entry.
Maximum combos:
When in freestyle mode, have someone else hold Square,
Triangle, or Circle while you jiggle the Left Analog-stick
as fast as possible.