GAME GENIE CODES: X-Men 2 - Clone Wars.
 No.  Code  Effect
   1  AKRT-AA58  Infinite lives
   2  J6SB-8EY6  Invincible
   3  ABRT-AWEE  Start with 9 health after 1st life
   4  BKRA-AAE0  Start with 9 lives
   5  A3RA-AAE0  Start with 5 lives

Codes 6-11 only work for Wolverine.

   6  AB7B-WWDN  Regenerate all the way up to 9
   7  AB7B-WRDN  Regenerate up to 7
   8  AB7B-WLDN  Regenerate up to 5
   9  2K7B-WCDG  Regenerate twice as fast
 10  6F7B-WADG  Regenerate four times as fast
 11  RFMA-N60W  Play as Magneto on any level

Download The Big Book of Game Genie Codes.