Action Replay Codes [US]

The following are known Action Replay Codes for Sonic the Hedgehog 2 on SEGA Genesis / Mega Drive (Genesis).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay

• Enable Stage Select 1
  FFFFD0:0100
• Enable Debug Mode
  FFFFFA:0100
• Enable Debug Mode (On An Actual System)
  003B98:0001
• Infinite Rings 2
  FFFE20:00C8
• Infinite Lives
  FFFE12:0009
• Stage/Act Modifier 3
  FFFE10:XXYY
• Always Have 224 Rings (Official Code)
  FFFE21:00E0
• Unlimited Time
  FFFE24:0007
• Super Speed! [Sonic]
  FFF761:6410
• Super Speed! [Tails]
  FFFEC1:6410
• Invincibility For Sonic (Enemies Can’t Touch You) 4
  FFB030:FF
• Invincibility For Tails (Enemies Can’t Touch You)
  FFB070:FF
• Invincibility For Sonic (Always Have Shield) 5
  FFB02B:01
• Invincibility For Tails (Always Have Shield)
  FFB06B:01
• Infinite Time Underwater For Sonic
  FFB028:FA
• Infinite Time Underwater For Tails
  FFB068:FA
• Defeat Stage 1 Robotnik With 1 Hit
  FFB521:01
• Defeat Stage 2 Robotnik With 1 Hit
  FFB621:01
• Defeat Stage 3 Robotnik With 1 Hit
  FFB721:01
• Defeat Stage 4 Robotnik With 1 Hit
  FFB821:01
• Defeat Stage 5 Robotnik With 1 Hit
  FFB921:01
• Defeat Stage 6 Robotnik With 1 Hit
  FFBA21:01
• Defeat Stage 7 Robotnik With 1 Hit
  FFBB21:01
• Defeat Stage 8 Robotnik With 1 Hit
  FFBC21:01
• Defeat Final Stage Bosses With 1 Hit
  FFB461:01
• Enable Super Sonic (All Chaos Emeralds Collected)
  FFFFB1:07
• Switch F/X On For Levitate Jump For Sonic
  FFB012:FE
• Switch F/X On For Levitate Jump For Tails
  FFB052:FE
• Hyper Mode P1
  FFB01E:00
• Hyper Mode P2
  FFB05E:00
• Sonic Color Modifier 6
  FFFB04:??
  FFFB05:??
  FFFB06:??
  FFFB07:??
  FFFB08:??
  FFFB09:??
  FFFB0A:??
  FFFB0B:??
• Sonic & Tails Sneaker Color Modifier (Base Color)
  FFFB19:??
  FFFB1A:??
  FFFB1B:??
• HUD Display Modifier 7
  FFF711:??
• Rings Multiplier 8
  FFF710:00
• Warp To End of Stage P1 9
  FFB008:3C
• Warp To End of Stage P2 10
  FFB048:3C
• Play As Super Sonic (No Powers)
  FFFE19:01
• Disable Water
  FFF730:00
• Glowing Sonic
  FFF65F:FF

Footnotes

• At the title screen, hold the A button and push Start to enter the stage select menu.
• This code also allows you to pass the special stages with ease, and always get the Chaos Emerald at the end.
• 00 – Emerald Hill
  01 – [glitch] Emerald Hill
  02 – [glitch] Emerald Hill
  03 – [glitch] Emerald Hill
  04 – Metropolis
  05 – Metropolis [3]
  06 – Wing Fortress
  07 – Hill Top
  08 – Hidden Palace (!)
  09 – [glitch] Emerald Hill
  0A – Oil Ocean
  0B – Mystic Cave
  0C – Casino Night
  0D – Chemical Plant
  0E – Death Egg
  0F – Aquatic Ruin

  Quantity Digits for “yy”(act):

  00 – Act 1
  01 – Act 2
  02 – Act 3

  Not all stages have acts 2 or 3.

• Switch effects off to collect rings.
• Switch effects off before you see the Sega logo to avoid freezing.
• The third, fifth, and seventh lines are optional.
• Also affects the rings. You can still collect them.

  00 – Off
  01 – On

• Cheesy, yet satisfying. Since the rings are loading over each other all the time, there is a major slowdown in the game speed.
• Turn off after you reach there.
• Turn off after you reach there.

Game Genie Codes

The following are known Game Genie Codes for Sonic the Hedgehog 2 on SEGA Genesis.

There are two versions of the game, if the codes for “Version A” below do not work, use the “Version B” codes further down the list.
• Master Code – Must Be On
  ATBT-AA4E
  Note: It is known this is required on emulators but may not be required on an actual Genesis console.
• Invisible Sonic
  R0TA-DERP
• Enable Debugger
  AE7T-AAE2
• Sonic’s Ring Count Goes To 99 You Get Hit 4
  NNTT-CACY
• Tails’ Ring Count Goes To 99 When You Get Hit 5
  NNTT-CADJ
• Don’t Use Up Rings To Maintain Transformation of Super Sonic
  ACZT-CAFY
• Become Super Sonic With 0 Rings
  ACZT-CACJ
• Become Super Sonic With 0 Emeralds
  ACZT-CACA
• The Regular Level Music Plays When Super Sonic, Instead of The Super Theme
  ADFT-8AF6

Version A Codes

• Rings Worth 2 (Player 1
  SAST-DJ1A
• Rings Worth 3 (Player 1)
  SAST-DN1A
• Rings Worth 4 (Player 1)
  SAST-DT1A
• Rings Worth 5 (Player 1)
  SAST-DY1A
• Rings Worth 6 (Player 1)
  SAST-D21A
• Rings Worth 7 (Player 1)
  SAST-D61A
• Rings Worth 8 (Player 1)
  SAST-DA1A
• Start With 1 Life Instead Of 3 (Player 1)
  AE8A-AAD2
• Start With 5 Lives (Player 1)
  AY8A-AAD2
• Start With 7 Lives (Player 1)
  A68A-AAD2
• Start With 9 Lives (Player 1)
  BE8A-AAD2
• Start With 25 Lives (Player 1)
  DE8A-AAD2
• Start With 50 Lives (Player 1)
  GJ8A-AAD2
• Start With 75 Lives (Player 1)
  KN8A-AAD2
• Start With 99 Lives (Player 1)
  NN8A-AAD2
• Infinite Lives (Player 1)
  JW3A-CA4J
• Rings Worth 2 (Player 2)
  SATA-DJVW
• Rings Worth 3 (Player 2)
  SATA-DNVW
• Rings Worth 4 (Player 2)
  SATA-DTVW
• Rings Worth 5 (Player 2)
  SATA-DYVW
• Rings Worth 6 (Player 2)
  SATA-D2VW
• Rings Worth 7 (Player 2)
  SATA-D6VW
• Rings Worth 8 (Player 2)
  SATA-DAVW
• Start With 1 Life Instead Of 3 (Player 2)
  AE8A-AAD8
• Start With 5 Lives (Player 2)
  AY8A-AAD8
• Start With 7 Lives (Player 2)
  A68A-AAD8
• Start With 9 Lives (Player 2)
  BE8A-AAD8
• Start With 25 Lives (Player 2)
  DE8A-AAD8
• Start With 50 Lives (Player 2)
  GJ8A-AAD8
• Start With 75 Lives (Player 2)
  KN8A-AAD8
• Start With 99 Lives (Player 2)
  NN8A-AAD8
• Infinite Lives (Player 2)
  JXGA-CA7G
• Jump Lower
  KBVT-CAE2
• Jump A Little Higher
  FVVT-CAE2
• Jump A Lot Higher
  EBVT-CAE2
• Jump Really High
  CBVT-CAE2
• Sonic Stays Invincible For A Shorter Time After Getting Hit
  A02T-CAF8
• Sonic Stays Invincible For A Longer Time After Getting Hit
  982T-CAF8
• 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)
  ALTA-CA8N
• Once Invincible (Stars), Sonic Stays Invincible For The Rest Of The Level
  ALTA-CA9J
• Sonic Doesn’t Lose Rings When Hit
  ATTT-CA4W
• Tails Doesn’t Lose Rings When Hit
  ATTT-CA5G
• Sonic Needs Only 1 Ring Instead Of 50 To Enter Special Stage After Touching A Star Post
  AH2T-CAH6
• Rings Worth 2 In Special Stages (Sonic)
  SBJA-HJWJ
• Rings Worth 3 In Special Stages (Sonic)
  SBJA-HNWJ
• Rings Worth 4 In Special Stages (Sonic)
  SBJA-HTWJ
• Rings Worth 5 In Special Stages (Sonic)
  SBJA-HYWJ
• Rings Worth 6 In Special Stages (Sonic)
  SBJA-H2WJ
• Rings Worth 7 In Special Stages (Sonic)
  SBJA-H6WJ
• Rings Worth 8 In Special Stages (Sonic)
  SBJA-HAWJ
• Rings Worth 2 In Special Stages (Tails)
  SBJA-HJWR
• Rings Worth 3 In Special Stages (Tails)
  SBJA-HNWR
• Rings Worth 4 In Special Stages (Tails)
  SBJA-HTWR
• Rings Worth 5 In Special Stages (Tails)
  SBJA-HYWR
• Rings Worth 6 In Special Stages (Tails)
  SBJA-H2WR
• Rings Worth 7 In Special Stages (Tails)
  SBJA-H6WR
• Rings Worth 8 In Special Stages (Tails)
  SBJA-HAWR
• Need 0 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  ACZT-CACA
• Need 1 Chaos Emerald To Become Super Sonic (In Addition To Rings)
  AGZT-CACA
• Need 2 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  ALZT-CACA
• Need 3 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  ARZT-CACA
• Need 4 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  AWZT-CACA
• Need 5 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  A0ZT-CACA
• Need 6 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  A4ZT-CACA
• Need 1 Ring To Become Super Sonic (In Addition To Chaos Emeralds – Don’t Lose Rings With Time
  AGZT-CACJ
  K4ZT-CA9N
• Need 5 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  A0ZT-CACJ
• Need 10 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  BLZT-CACJ
• Need 25 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  DGZT-CACJ
• Need 40 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  FCZT-CACJ
• Super Sonic Doesn’t Lose Rings With Time
  K4ZT-CA9N
• Level Select Menu (At Title Screen, Hold Down A While Pressing Start)
  RE8A-A60W
• Start Most Levels With Some Rings (1-Player Game Only – The Number Of Rings Varies With The Stage, And You Can Still Lose Rings)
  2VAT-BCRN

Version B Codes

• Rings Worth 2 (Player 1)
  SATA-DJTJ
• Rings Worth 3 (Player 1)
  SATA-DNTJ
• Rings Worth 4 (Player 1)
  SATA-DTTJ
• Rings Worth 5 (Player 1)
  SATA-DYTJ
• Rings Worth 6 (Player 1)
  SATA-D2TJ
• Rings Worth 7 (Player 1)
  SATA-D6TJ
• Rings Worth 8 (Player 1)
  SATA-DATJ
• Start With 1 Life Instead Of 3 (Player 1)
  AE8A-AADN
• Start With 5 Lives (Player 1)
  AY8A-AADN
• Start With 7 Lives (Player 1)
  A68A-AADN
• Start With 9 Lives (Player 1)
  BE8A-AADN
• Start With 25 Lives (Player 1)
  DE8A-AADN
• Start With 50 Lives (Player 1)
  GJ8A-AADN
• Start With 75 Lives (Player 1)
  KN8A-AADN
• Start With 99 Lives (Player 1)
  NN8A-AADN
• Infinite Lives (Player 1)
  JW3A-CA4Y
• Rings Worth 2 (Player 2)
  SATA-DJW8
• Rings Worth 3 (Player 2)
  SATA-DNW8
• Rings Worth 4 (Player 2)
  SATA-DTW8
• Rings Worth 5 (Player 2)
  SATA-DYW8
• Rings Worth 6 (Player 2)
  SATA-D2W8
• Rings Worth 7 (Player 2)
  SATA-D6W8
• Rings Worth 8 (Player 2)
  SATA-DAW8
• Start With 1 Life Instead Of 3 (Player 2)
  AE8A-AADW
• Start With 5 Lives (Player 2)
  AY8A-AADW
• Start With 7 Lives (Player 2)
  A68A-AADW
• Start With 9 Lives (Player 2)
  BE8A-AADW
• Start With 25 Lives (Player 2)
  DE8A-AADW
• Start With 50 Lives (Player 2)
  GJ8A-AADW
• Start With 75 Lives (Player 2)
  KN8A-AADW
• Start With 99 Lives (Player 2)
  NN8A-AADW
• Infinite Lives (Player 2)
  JXGA-CA7W
• Jump Lower
  KBVT-CAE2
• Jump A Little Higher
  FVVT-CAE2
• Jump A Lot Higher
  EBVT-CAE2
• Jump Really High
  CBVT-CAE2
• Sonic Stays Invincible For A Shorter Time After Getting Hit
  A02T-CAGL
• Sonic Stays Invincible For A Longer Time After Getting Hit
  982T-CAGL
• 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)
  ALTA-CA82
• Once Invincible (Stars), Sonic Stays Invincible For The Rest Of The Level
  ALTA-CA9Y
• Sonic Doesn’t Lose Rings When Hit
  ATTT-CA58
• Tails Doesn’t Lose Rings When Hit
  ATTT-CA6W
• Sonic Needs Only 1 Ring Instead Of 50 To Enter Special Stage After Touching A Star Post
  AH2T-CAHN
• Rings Worth 2 In Special Stages (Sonic)
  SBJA-HJV2
• Rings Worth 3 In Special Stages (Sonic)
  SBJA-HNV2
• Rings Worth 4 In Special Stages (Sonic)
  SBJA-HTV2
• Rings Worth 5 In Special Stages (Sonic)
  SBJA-HYV2
• Rings Worth 6 In Special Stages (Sonic)
  SBJA-H2V2
• Rings Worth 7 In Special Stages (Sonic)
  SBJA-H6V2
• Rings Worth 8 In Special Stages (Sonic)
  SBJA-HAV2
• Rings Worth 2 In Special Stages (Tails)
  SBJA-HJV8
• Rings Worth 3 In Special Stages (Tails)
  SBJA-HNV8
• Rings Worth 4 In Special Stages (Tails)
  SBJA-HTV8
• Rings Worth 5 In Special Stages (Tails)
  SBJA-HYV8
• Rings Worth 6 In Special Stages (Tails)
  SBJA-H2V8
• Rings Worth 7 In Special Stages (Tails)
  SBJA-H6V8
• Rings Worth 8 In Special Stages (Tails)
  SBJA-HAV8
• Need 0 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  ACZT-CACN
• Need 1 Chaos Emerald To Become Super Sonic (In Addition To Rings)
  AGZT-CACN
• Need 2 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  ALZT-CACN
• Need 3 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  ARZT-CACN
• Need 4 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  AWZT-CACN
• Need 5 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  A0ZT-CACN
• Need 6 Chaos Emeralds To Become Super Sonic (In Addition To Rings)
  A4ZT-CACN
• Need 1 Ring To Become Super Sonic (In Addition To Chaos Emeralds – Don’t Lose Rings With Time
  AGZT-CACY
  K4ZT-CA92
• Need 5 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  A0ZT-CACY
• Need 10 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  BLZT-CACY
• Need 25 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  DGZT-CACY
• Need 40 Rings To Become Super Sonic (In Addition To Chaos Emeralds)
  FCZT-CACY
• Super Sonic Doesn’t Lose Rings With Time
  K4ZT-CA92
• Level Select Menu (At Title Screen, Hold Down A While Pressing Start)
  RE8A-A60G
• Start Most Levels With Some Rings (1-Player Game Only – The Number Of Rings Varies With The Stage, And You Can Still Lose Rings)
  2VAT-BCRA
• One Hit And You Are Invincible
  982T-C9F8