Secret Characters:
     At the "New Name" screen press L, C-Right, C-Down

Level select:
     Enter  [Saturn][Spaceship][Rocket][Heart][Skull] as a name. Note:
press  L  +  C-Right  +  C-Down to enter the special characters in the
name. Any level in any game mode may be accessed.

Lines mini-game:
     Enter  LINES  as  a  name. The object of the game is to remove an
area  large  enough  to  released the trapped character. Line up three
pieces in a horizontal or vertical line to remove them.

Bonus music:
     Enter  G[Alien  head]MEBOY  as  a name. Note: press L + C-Right +
C-Down  to  enter  the  special character in the name. Enter the audio
screen to access nine additional songs.

View vortex sequence:
     Enter VORTEX as a name. Hold the reset button. A sequence showing
all  robots being sucked into a vortex will be displayed after several
seconds. Release the reset button to end the display.

View credits:
     Enter CREDITS as a name.

Unlock various levels:
     Enter  any  of the names at the high score screen as your name to
unlock all levels that player previously completed.

How to Beat the Crystal Tower:
     Having  trouble  with the Crystal Tower level? And every time you
try to break a piece near it, one side falls down and you lose, right?
Well  here's  a way to stop all that. First, break other pieces untill
you  get a magic. Then, use the magic on the top of the Crystal Tower.
Repeat until you've won.

Play as the champions:
     Go  to the options menu and then select "scores". look at the top
scores  for  puzzle,  time trial, hide and seek etc. then remember the
highest  score in any game mode and exit the "scores" menu. enter your
name  as  the highest scorer's name on the new name screen and you can
go to almost any level.

To view the ending instantly:
     Beat  the  first  stage under 5 min and go to 2 player mode. Exit
that  and  your  will see an extra mode. Click in it then type endless
ending and you will see the ending.