The following are known Game Genie Codes for Batman on SEGA Genesis.

• Master Code – Must Be On
  E2ET-AA4C
• Infinite Lives
  AKFT-AA4Y
• Batman Floats When He Dies!
  RFFA-A60N
• Infinite Batarangs
  AKYA-AA9G
• Guns Don’t Hurt
  RYFA-C6VR
• Infinite Rockets For The Batwing
  AKYT-AA5L
• Punches, Knives And Guns Don’t Hurt
  B2AT-CA46
• Infinite Rockets For The Batmobile
  AKYT-AA7R
• Start On Axis Chemical Plant Level
  HEET-BJX2
• Start On Flugelheim Museum Level
  HEET-BNX2
• Start Battle With Bob The Goon
  HEET-BTX2
• Start With Graphic Before Gotham City Streets
  HEET-BYX2
• Start On Gotham City Streets Level
  HEET-B2X2
• Start Battle With Mimes
  HEET-B6X2
• Start Battle With Gotham City Streets Boss
  HEET-BAX2
• Start On Sky Over Gotham Level
  9TET-BGD2
  BEET-AAD4
  96ET-AAD6
  5NET-AYX8
  AJET-AA6A
• Start On Gotham Cathedral Level
  9TET-BGD2
  BJET-AAD4
  96ET-AAD6
  5NET-AYX8
  AJET-AA6A
• Start On Gotham Cathedral Level spikes
  9TET-BGD2
  BNET-AAD4
  96ET-AAD6
  5NET-AYX8
  AJET-AA6A
• Meet The Joker
  9TET-BGD2
  BTET-AAD4
  96ET-AAD6
  5NET-AYX8
  AJET-AA6A
• Skip Through Levels
  HEGA-BJVG
• Skip Through Levels Faster
  HEGA-BTVG
• Invincible And Invisible!
  AKEA-AA4J
• Invincibility
  BAAT-CA5C
• Level Select (Disengage At Correct Level)
  REFT-A6Z0
• Invincible
  C24A-B4EE
• Bosses And Some Enemies Don’t Fight Back
  GC1A-AAAA
• Enemies And Bosses Too Fast
  A41A-ASON
• You Cannot Be Hurt By Knives, Punches, Sword, Ax, Etc…
  S31A-AZSC
  Note: Enemies also do not shoot any projectile based weapons but you can still take damage from running into enemies.
• Hold Down For A Kick Pose
  VZGA-AGSE
• Music 1
  D2MT-B740
• Music 2
  Y2MT-B740
• Music 3
  CNMT-B740
• Music 4
  YTMT-B740
• Music 5
  AYMT-B740
• Music 6
  Y6MT-B740
• Music 7
  YYMT-B740
• Music 8
  BEMT-B740
• Music 9
  YNMT-B740
• Music 10
  YJMT-B740
• Batarang Increases Very Fast
  BA4A-AR3C
• Batman Keeps Blinking
  AVEA-BALE
• Yellow Game
  AA4T-AASA
• Fight Six Bosses
  A0TT-AMNC
• Keep Dying
  VTFT-BMFL
• Batman Keeps Falling From The Sky
  BBNT-AAX8
• Batman Walks On Air
  ACBT-AARR