GAME GENIE CODES: Sonic the Hedgehog 2.

 No.  "A" Code  "B" Code  Effect

There are 2 Versions of this game. If the "A" Codes don't work try the "B" Codes.

Codes 1 THRU 16 also work for Tails in a one-player game.
   1  SAST-DJ1A  SATA-DJTJ  Rings worth 2--player 1
   2  SAST-DN1A  SATA-DNTJ  Rings worth 3--player 1
   3  SAST-DT1A  SATA-DTTJ  Rings worth 4--player 1
   4  SAST-DY1A  SATA-DYTJ  Rings worth 5--player 1
   5  SAST-D21A  SATA-D2TJ  Rings worth 6--player 1
   6  SAST-D61A  SATA-D6TJ  Rings worth 7--player 1
   7  SAST-DA1A  SATA-DATJ  Rings worth 8--player 1
   8  AE8A-AAD2  AE8A-AADN  Start with 1 life instead of 3--player 1
   9  AY8A-AAD2  AY8A-AADN  Start with 5 lives--player 1
 10  A68A-AAD2  A68A-AADN  Start with 7 lives--player 1
 11  BE8A-AAD2  BE8A-AADN  Start with 9 lives--player 1
 12  DE8A-AAD2  DE8A-AADN  Start with 25 lives--player 1
 13  GJ8A-AAD2  GJ8A-AADN  Start with 50 lives--player 1
 14  KN8A-AAD2  KN8A-AADN  Start with 75 lives--player 1
 15  NN8A-AAD2  NN8A-AADN  Start with 99 lives--player 1
 16  JW3A-CA4J  JW3A-CA4Y  Infinite lives--player 1
 17  SATA-DJVW  SATA-DJW8  Rings worth 2--player 2
 18  SATA-DNVW  SATA-DNW8  Rings worth 3--player 2
 19  SATA-DTVW  SATA-DTW8  Rings worth 4--player 2
 20  SATA-DYVW  SATA-DYW8  Rings worth 5--player 2
 21  SATA-D2VW  SATA-D2W8  Rings worth 6--player 2
 22  SATA-D6VW  SATA-D6W8  Rings worth 7--player 2
 23  SATA-DAVW  SATA-DAW8  Rings worth 8--player 2
 24  AE8A-AAD8  AE8A-AADW  Start with 1 life instead of 3--player 2
 25  AY8A-AAD8  AY8A-AADW  Start with 5 lives--player 2
 26  A68A-AAD8  A68A-AADW  Start with 7 lives--player 2
 27  BE8A-AAD8  BE8A-AADW  Start with 9 lives--player 2
 28  DE8A-AAD8  DE8A-AADW  Start with 25 lives--player 2
 29  GJ8A-AAD8  GJ8A-AADW  Start with 50 lives--player 2
 30  KN8A-AAD8  KN8A-AADW  Start with 75 lives--player 2
 31  NN8A-AAD8  NN8A-AADW  Start with 99 lives--player 2
 32  JXGA-CA7G  JXGA-CA7W  Infinite lives--player 2
 33  KBVT-CAE2  KBVT-CAE2  Jump lower
 34  FVVT-CAE2  FVVT-CAE2  Jump a little higher
With Codes 35 & 36, Switch off if you get stuck somewhere or you want to sink in water.
 35  EBVT-CAE2  EBVT-CAE2  Jump a lot higher
 36  CBVT-CAE2  CBVT-CAE2  Jump really high
 37  A02T-CAF8  A02T-CAGL  Sonic stays invincible for a shorter time after getting hit
 38  982T-CAF8  982T-CAGL  Sonic stays invincible for a longer time after getting hit
 39  ALTA-CA8N  ALTA-CA82  Sonic becomes invisible and invincible for the rest of the
 level after getting hit--must have at least one ring.
 (switch off and then on to make Sonic visible)
 40  ALTA-CA9J  ALTA-CA9Y  Once invincible (stars), Sonic stays Invincible for the
 rest of the level
 41  ATTT-CA4W  ATTT-CA58  Sonic doesn't lose rings when hit
 42  ATTT-CA5G  ATTT-CA6W  Tails doesn't lose rings when hit
 43  AH2T-CAH6  AH2T-CAHN  Sonic needs only 1 ring instead of 50 to enter special
 stage after touching a star post
With Codes 44 Thru 57, The counter doesn't show the extra rings, but you do get them.
 44  SBJA-HJWJ  SBJA-HJV2  Rings worth 2 in special stages--Sonic
 45  SBJA-HNWJ  SBJA-HNV2  Rings worth 3 in special stages--Sonic
 46  SBJA-HTWJ  SBJA-HTV2  Rings worth 4 in special stages--Sonic
 47  SBJA-HYWJ  SBJA-HYV2  Rings worth 5 in special stages--Sonic
 48  SBJA-H2WJ  SBJA-H2V2  Rings worth 6 in special stages--Sonic
 49  SBJA-H6WJ  SBJA-H6V2  Rings worth 7 in special stages--Sonic
 50  SBJA-HAWJ  SBJA-HAV2  Rings worth 8 in special stages--Sonic
 51  SBJA-HJWR  SBJA-HJV8  Rings worth 2 in special stages--Tails
 52  SBJA-HNWR  SBJA-HNV8  Rings worth 3 in special stages--Tails
 53  SBJA-HTWR  SBJA-HTV8  Rings worth 4 in special stages--Tails
 54  SBJA-HYWR  SBJA-HYV8  Rings worth 5 in special stages--Tails
 55  SBJA-H2WR  SBJA-H2V8  Rings worth 6 in special stages--Tails
 56  SBJA-H6WR  SBJA-H6V8  Rings worth 7 in special stages--Tails
 57  SBJA-HAWR  SBJA-HAV8  Rings worth 8 in special stages--Tails
Normally, you have to grab all seven chaos emeralds, 50 rings, and jump to turn into Super Sonic.
With Codes 58 Thru 69, you can reduce the number of emeralds and rings you have to get.
For Codes 58 Thru 64, Don't grab more Chaos Emeralds than you need!
 58  ACZT-CACA  ACZT-CACN  Need 0 chaos emeralds to become Super Sonic
 59  AGZT-CACA  AGZT-CACN  Need 1 Chaos Emerald to become Super Sonic
 60  ALZT-CACA  ALZT-CACN  Need 2 chaos emeralds to become Super Sonic
 61  ARZT-CACA  ARZT-CACN  Need 3 chaos emeralds to become Super Sonic
 62  AWZT-CACA  AWZT-CACN  Need 4 chaos emeralds to become Super Sonic
 63  A0ZT-CACA  A0ZT-CACN  Need 5 chaos emeralds to become Super Sonic
 64  A4ZT-CACA  A4ZT-CACN  Need 6 chaos emeralds to become Super Sonic
 65  AGZT-CACJ
 + K4ZT-CA9N
 AGZT-CACY
 + K4ZT-CA92
 Need 1 ring to become Super Sonic,
don't lose rings with time
 66  A0ZT-CACJ  A0ZT-CACY  Need 5 rings to become Super Sonic
 67  BLZT-CACJ  BLZT-CACY  Need 10 rings to become Super Sonic
 68  DGZT-CACJ  DGZT-CACY  Need 25 rings to become Super Sonic
 69  FCZT-CACJ  FCZT-CACY  Need 40 rings to become Super Sonic
 70  K4ZT-CA9N  K4ZT-CA92  Super Sonic doesn't lose rings with time
 71  RE8A-A60W  RE8A-A60G  Level select menu--
 at title screen, hold down A while pressing start
 72  2VAT-BCRN  2VAT-BCRA  Start most levels with some rings--1-player game only
 (No. of rings varies with stage, & you can still lose rings)

Download The Big Book of Game Genie Codes.