The following are known Action Replay Codes for Breath of Fire on Super Nintendo Entertainment System (SNES).

• Infinite energy
  7E104E4D
• Guarantees that the character in first position always has between 256 and 511 HP
  7E104F01
• Guarantees that the character in second position always has between 256 and 511 HP
  7E10EF01
• Guarantees that the character in third position always has between 256 and 511 HP
  7E118F01
• Guarantees that the character in fourth position always has between 256 and 511 HP
  7E122F01
• Start with millions of Exp Points (You will be fully powered up after first battle)
  81961CFF
  81961DFF
  81961E88
• Start with millions of Exp points
  81961DFF
  81961E88
• Raise Hero to level 99 after first battle
  81961E88
• New character with 999 maximum Hit Points
  819614E7
  81961503
• New character with 255 Strength
  81961FFF
• New character with 255 Vigor
  819620FF
• New character with 255 Speed
  81962116
• New character with 255 Speed
  819621FF
• New character with 255 Agility
  819622FF
• Start Bo’s level at 1, for greater final stats
  81964201
• Start Bo’s [present] HP at 255
  819644FF
• Start Bo’s max HP at 255
  819646FF
• Start Bo’s [present] AP at 255
  819648FF
• Start Bo’s max AP at 255
  81964AFF
• Start Bo’s Strength at 255
  81964FFF
• Start Bo’s Vigor at 255
  819650FF
• Start Bo’s Wisdom at 255
  819651FF
• Start Bo’s Agility at 255
  819652FF
• Start Bo’s Luck at 255
  819654FF
• Sets Nina’s level to 1, for greater final stats
  81967201
• Raise Nina’s to level 99 after first battle
  81967E88
• Start Ox’s Level at 1 for greater final stats
  8196A201
• Start Ox’s [present] HP at 255
  8196A4FF
• Start Ox’s max HP at 255
  8196A6FF
• Start Ox’s [present] AP at 255
  8196A8FF
• Start Ox’s max AP at 255
  8196AAFF
• Start Ox’s EXP at 9,000,000
  8196AE88
• Start Ox’s Strength at 255
  8196AFFF
• Start Ox’s Vigor at 255
  8196B0FF
• Start Ox’s Wisdom at 255
  8196B1FF
• Start Ox’s Agility at 255
  8196B2FF
• Start Ox’s Luck at 255
  8196B4FF
• Start Gobi’s Level at 1 for greater final stats
  8196D201
• Start Gobi’s [present] HP at 255
  8196D4FF
• Start Gobi’s max HP at 255
  8196D6FF
• Start Gobi’s [present] AP at 255
  8196D8FF
• Start Gobi’s max AP at 255
  8196DAFF
• Start Gobi’s EXP at 9,000,000
  8196DE88
• Start Gobi’s Strength at 255
  8196DFFF
• Start Gobi’s Vigor at 255
  8196E0FF
• Start Gobi’s Wisdom at 255
  8196E1FF
• Start Gobi’s Agility at 255
  8196E2FF
• Start Gobi’s Luck at 255
  8196E4FF
• Start Karn’s Level at 1 for greater final stats
  81970201
• Start Karn’s [present] HP at 255
  819704FF
• Start Karn’s max HP at 255
  819706FF
• Start Karn’s [present] AP at 255
  819708FF
• Start Karn’s max AP at 255
  81970AFF
• Start Karn’s EXP to 9,000,000
  81970E88
• Start Karn’s Strength at 255
  81970FFF
• Start Karn’s Vigor at 255
  819710FF
• Start Karn’s Wisdom at 255
  819711FF
• Start Karn’s Agility at 255
  819712FF
• Start Karn’s Luck at 255
  819714FF
• Start Mogu’s Level at 1 for greater final stats
  81973201
• Start Mogu’s [present] HP at 255
  819734FF
• Start Mogu’s max HP at 255
  819736FF
• Start Mogu’s [present] AP at 255
  819738FF
• Start Mogu’s max AP at 255
  81973AFF
• Start Mogu’s EXP at 9,000,000
  81973E88
• Start Mogu’s Strength at 255
  81973FFF
• Start Mogu’s Vigor at 255
  819740FF
• Start Mogu’s Wisdom at 255
  819741FF
• Start Mogu’s Agility at 255
  819742FF
• Start Mogu’s Luck at 255
  819744FF
• Start Bleu’s Level at 1 for greater final stats
  81976201
• Start Bleu’s [present] HP at 255
  819764FF
• Start Bleu’s max HP at 255
  819766FF
• Start Bleu’s [present] AP at 255
  819768FF
• Start Bleu’s max AP at 255
  81976AFF
• Start Bleu’s EXP at 9,000,000
  81976EFF
• Start Bleu’s Strength at 255
  81976FFF
• Start Bleu’s Vigor at 255
  819770FF
• Start Bleu’s Wisdom at 255
  819771FF
• Start Bleu’s Agility at 255
  819772FF
• Start Bleu’s Luck at 255
  819774FF
• Invincible
  83C2FA84