Mercs.
 No.  Code  Effect
   1  CTBT-AA4A  MASTER CODE--MUST BE ENTERED
   2  ALAT-AA4N  Almost Infinite life
   3  RHNA-A6Z0  Infinite mega crash bombs
   4  ATMT-AAAA  Start with 4 mega crash bombs
   5  AYMT-AAAA  Start with 5 mega crash bombs
   6  A2MT-AAAA  Start with 6 mega crash bombs
   7  A6MT-AAAA  Start with 7 mega crash bombs
   8  BAMT-AAAA  Start with 8 mega crash bombs
   9  A5KA-AA4W  Infinite continues
 10  ETMT-AACA  Start with 8 continues in arcade mode--normal  
 11  EAMT-AACA  Start with 7 continues in arcade mode--normal
 12  DTMT-AACA  Start with 6 continues in arcade mode--normal
 13  DAMT-AACA  Start with 5 continues in arcade mode--normal
 14  ETMT-AACC  Start with 8 continues in arcade mode--hard
 15  EAMT-AACC  Start with 7 continues in arcade mode--hard
 16  DTMT-AACC  Start with 6 continues in arcade mode--hard
 17  DAMT-AACC  Start with 5 continues in arcade mode--hard
 18  ETMT-AAB8  Start with 8 continues in arcade mode--easy
 19  EAMT-AAB8  Start with 7 continues in arcade mode--easy
 20  DTMT-AAB8  Start with 6 continues in arcade mode--easy
 21  DAMT-AAB8  Start with 5 continues in arcade mode--easy
With Codes 22 thru 25,
power levels are fixed at the chosen level through the whole round,
and power-ups may not have an effect.
 22  RG3A-A61C + B83A-BJ9A    Start with 5x normal firepower level
 23  RG3A-A61C + D83A-BJ9A  Start with 10x normal firepower level
 24  RG3A-A61C + JC3A-BJ9A  Start with 20x normal firepower level
 25  RG3A-A61C + 7C3A-BJ9A  Start with 40x normal firepower level