Streets of Rage 2.

 No.  Code  Effect
   1  AK9A-BA6C  Start on stage 2 instead of 1
   2  AV9A-BA6C  Start on stage 3
   3  A39A-BA6C  Start on stage 4
   4  BB9A-BA6C  Start on stage 5
   5  BK9A-BA6C  Start on stage 6
   6  BV9A-BA6C  Start on stage 7
   7  B39A-BA6C  Start on stage 8
   8  V30A-BEB6  Player 1 starts with 7 lives
   9  LB0A-BEB6  Player 1 starts with 9 lives
 10  V30A-BEGL + V45A-BEAC  Player 2 starts with 7 lives
 11  LB0A-BEGL + LC5A-BEAC  Player 2 starts with 9 lives
 12  AW7T-AA6L  Infinite lives--both players
 13  CBFA-AAG6  Apple pick-up restores less energy
 14  JKFA-AAG6  Apple pick-up restores more energy
 15  PBFA-AAG6  Apple pick-up restores all energy
 16  ABFA-AAG6  Apple pick-up worth nothing
 17  JBFA-AAH8 + PKFA-ANH6
 + 5VFT-AA2C
 Roast chicken pick-up restores less energy
 18  EBFA-AAH8 + PKFA-ANH6
 + 5VFT-AA2C
 Roast chicken pick-up restores much less energy  
 19  ABFA-AAH8 + PKFA-ANH6  
 + 5VFT-AA2C
 Roast chicken pick-up worth nothing
 20  LBFT-AAAT  Cash bag worth 5,000 instead of 1,000
 21  ABFT-ACAT  Cash bag worth 10,000
 22  LBFT-AEAT  Cash bag worth 25,000
 23  ABFT-AAAT  Cash bag worth nothing
 24  CBFT-AAAY  Gold bar worth 1,000 instead of 5,000
 25  ABFT-ACAY  Gold bar worth 10,000
 26  ABFT-AEAY  Gold bar worth 20,000
 27  ABFT-ALAY  Gold bar worth 50,000
 28  ABFT-AAAY  Gold bar worth nothing
 29  PKFA-BJ0E  1-up worth 2 lives instead of 1
 30  PKFA-BN0E  1-up worth 3 lives
 31  AKFA-AA8E  1-up worth nothing
 32  AK1A-AAAE  Player 1 starts with 1 continue instead of 2
 33  AZ1A-AAAE  Player 1 starts with 4 continues
 34  A71A-AAAE  Player 1 starts with 6 continues
 35  BF1A-AAAE  Player 1 starts with 8 continues
 36  AF1A-AAAE  Player 1 starts with no continues
 37  AK1A-AAC4  Player 2 starts with 1 continue instead of 2
 38  AZ1A-AAC4  Player 2 starts with 4 continues
 39  A71A-AAC4  Player 2 starts with 6 continues
 40  BF1A-AAC4  Player 2 starts with 8 continues
 41  AF1A-AAC4  Player 2 starts with no continues
 42  AL7T-AA62  Infinite continues--both players
 43  NM6T-AAF0  Choose up to 99 players on options screen