X-Men: Next Dimension
Books: Secret Codes 2003 - The Ultimate Code Book: Cheating Made Easy
Last Updated: 12/20/02.
Fight as Sentinel A 
Third costume
Sixth costume
Seventh costume
Ending sequences
Fight as Bastion
Fight as Bishop
Fight as Blob
Fight as Psylocke
Fight as Dark Phoenix
Fight as Sentinel A
Successfully complete the game in arcade mode as Cyclops.
Third costume
Successfully complete the game in story mode to unlock that
character's third costume.
Sixth costume
Defeat all ten fighters in time attack mode in under fifteen
minutes to unlock the sixth costume for the fighter you selected.
Seventh costume
Select team mode and choose to fight with eight characters. Defeat
all of the your opponent's team by using two or less of your own
fighters to unlock the seventh costume for the character(s) you used.
Wolverine gets his original yellow/blue/black costume.
Phoenix gets a red/gold costume similar to Dark Phoenix.
Juggernaut, Gambit, and Psylocke get a costume similar
to their comic book original.
Beast gets a blue costume with a yellow X on his chest,
and he also has a helmet.
Ending sequences
There are three possible endings in the game in story mode.
Regular ending (Magneto's Victory): Defeat Bastion as Magneto.
Alternate ending (Phoenix's Victory): Lose the Magneto
vs. Bastion fight and you will go to the Phoenix vs.
Bastion fight. Defeat Bastion as Phoenix.
Secret Ending (Fury of Dark Phoenix): Get a "Perfect"
victory in the Phoenix vs. Bastion fight. This will
also, unlock Dark Phoenix as a playable character.
Fight as Bastion
Successfully complete the game story mode as Magneto without
losing any matches to face Bastion. Defeat Bastion to unlock him
as a selectable character.
Fight as Bishop
Successfully complete the game in arcade mode as Gambit to unlock
Bishop as a selectable character.
Fight as Blob
Successfully complete the game in arcade mode as Bishop to unlock
Blob as a selectable character.
Fight as Psylocke
Successfully complete the game in arcade mode as Betsy to unlock
Psylocke as a selectable character.
Fight as Dark Phoenix
Successfully complete the game in arcade mode as Phoenix to unlock
Dark Phoenix as a selectable character. Alternately, successfully
complete the game in story mode as Magneto.
