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

• Infinite Lives
  A2ET-AA8G
• Timer Runs Faster
  EAFA-AADT
• Timer Runs Slower
  SAFA-AADT
• Timer Disabled
  CJFA-AA58
• Start With 1 Life
  AAGA-AAHY
• Start With 2 Lives
  AEGA-AAHY
• Start With 3 Lives
  AJGA-AAHY
• Start With 5 Lives
  ATGA-AAHY
• Start With 7 Lives
  A2GA-AAHY
• Timer Starts At 100 For All Scenes
  NTGT-AAC6
  YANA-BK38
• Timer Starts At 200 For All Scenes
  3AGT-AAC6
  YANA-BK38
• Timer Starts At 300 For All Scenes
  FTGT-ACC6
  YANA-BK38
• Timer Starts At 500 For All Scenes
  8TGT-ACC6
  YANA-BK38
• Timer Starts At 999 For All Scenes
  66GT-AGC6
  YANA-BK38
• Start Game At Act 2
  AYNT-AAFA
• Start Game At Act 3
  BYNT-AAFA
• MP Gauge Never Loses Energy
  AK2A-AA52
• Small Heart Worth Same As Large Heart
  CLCA-AA6R
• Small Heart Worth Same As Extra Life
  RCCA-AA6R
• Small Heart Increases HP Gauge By 8
  JCCA-BAYW
• Small Heart Increases HP Gauge By 12
  BWCA-BA6R
  SCCA-BBYT
  J4CA-BK6W
• Small Heart Restores HP Gauge To Full
  A4CA-AA6W
• Large Heart Worth Same As Extra life
  JCCA-BTOT
• Large Heart Increases HP Gauge By 4
  AWCA-AAFJ
• Large Heart Increases HP Gauge By 10
  BLCA-AAFJ
• Large Heart Restores HP Gauge To Full
  DCCA-AAFJ
• S-Magic Worth Same As B-Magic
  CLCA-AA72
• S-Magic Increases MP Gauge By 12
  BWCA-BA72
  SCCA-BBZ4
  KLCA-BK76
• S-Magic Increases MP Gauge By 6
  JCCA-B2Z6
• S-Magic Restores MP Gauge To Full
  A4CA-AA76
• B-Magic Increases MP Gauge By 4
  MWCA-AA7C
• B-Magic Increases MP Gauge By 16
  CCCA-BA8N
  SCCA-BB0R
  KLCA-BK8T
• B-Magic Restores MP Gauge To Full
  A4CA-AA8T
• Bonus Life Worth Nothing
  RGCT-A6TE
• Bonus Life Worth 2 Lives
  JCCT-BJTE
• Bonus Life Worth 4 Lives
  JCCT-BTTE
• Bonus Life Worth 6 Lives
  JCCT-B2TE
• HP Gauge Never Loses Energy
  BCMA-AA2R
• Level Modifier
  ?YNTAAFA
  Level
  • A: Level 2
  • B: Level 3
  • C: Level 4
  • D: Level 5
• Dark Level Backround
  AYNAAAFA
• See Ending Game Intro
  AANTAAFA
• Always Falling Through The Ground
  AENTAAFA
• Almost Invincible
  D4LT-AA6J
  Note: You can still be hurt by boss magical abilities. You can also walk through illusions when using this code.