The following are known GameShark Codes for Mega Man 8 on Sony Playstation (PS1).

• Infinite Energy
  8015E282 2800
• Invincible
  8015E2AA 2D00
• Always Have Mega Ball
  801B1EB0 0001
• Infinite Mega Balls
  801B1EB2 2D00
• Always Have Flash Bomb
  801B1EB4 0001
• Infinite Flash Bombs
  801B1EB6 2D00
• Always Have Thunder Claw
  801B1EB8 0001
• Infinite Thunder Claws
  801B1EBA 2D00
• Always Have Ice Wave
  801B1EBC 0001
• Infinite Ice Waves
  801B1EBE 2D00
• Always Have Tornado Hold
  801B1EC0 0001
• Infinite Tornado Holds
  801B1EC2 2D00
• Always Have Water Balloon
  801B1EC4 0001
• Infinite Water Balloons
  801B1EC6 2D00
• Always Have Flame Sword
  801B1EC8 0001
• Infinite Flame Swords
  801B1ECA 2D00
• Always Have Homing Sniper
  801B1ECC 0001
• Infinite Homing Snipers
  801B1ECE 2D00
• Always Have Astro Crush
  801B1ED0 0001
• Infinite Astro Crushes
  801B1ED2 2D00
• Infinite Lives
  301C3370 0005
• Infinite Rush Energy
  8016D2F0 0009
• Have All Weapons
  50000904 0000
  801B1EB0 0001
  Note: GameShark 2.2+ Required
• Infinite Weapons
  50000904 0000
  801B1EB2 2800
  Note: GameShark 2.2+ Required
• Infinite Rush Bikes
  301C3352 0001
• Infinite Rush Questions
  301C3353 0001
• Infinite Rush Bombs
  301C3354 0001
• Infinite Rush Charges
  301C3355 0001
• Have Ex
  301C3344 0001
• Bolts Worth 10
  D0129788 0001
  80129788 000A
• Powerups Modifier 1
  3016D2F2 00??
• Powerups Modifier 2
  3016D2F3 00??
• Powerups Modifier 3
  3016D2F4 00??
• Powerups Modifier 4
  3016D2F5 00??
• Powerups Modifier 5
  3016D2F6 00??
• Powerups Modifier 6
  3016D2F7 00??
• Powerups Modifier 7
  3016D2F8 00??
• Powerups Modifier 8
  3016D2F9 00??
• Infinite Bolts
  3016D2F0 00FF
• Rapid Fire (Mega Buster)
  301B2948 0000
• Rapid Fire (Mega Ball)
  301B2949 0000
• Rapid Fire (Flash Bomb)
  301B294A 0000
• Rapid Fire (Thunder Claw)
  301B294B 0001
• Rapid Fire (Ice Wave)
  301B294C 0000
• Rapid Fire (Tornado Hold)
  301B294D 0000
• Rapid Fire (Water Ballon)
  301B294E 0000
• Rapid Fire (Flame Sword)
  301B294F 0000
• Rapid Fire (Homing Sniper)
  301B2950 0000
• Rapid Fire (Astro Crush)
  301B2951 0000
• Burst Fire
  8015E294 0000
• 1-Hit Death To Bosses
  8015B1BA 0100
• Warp To Last Stage
  D00FFC8C 0840
  800FFC98 000A
  D00FFC8C 0840
  800FFC9A 2403
  D00FFC8C 0840
  800FFCC0 0000
  D00FFC8C 0840
  800FFCC2 2402
• Mega Jump
  D01B2954 0040
  8015E254 4000
  D01B2954 2040
  8015E254 4000
  D01B2954 8040
  8015E254 4000
  D01B2954 20C0
  8015E254 4000
  D01B2954 80C0
  8015E254 4000
  D01B2954 00C0
  8015E254 4000
• Ultra Mega Rapid Fire
  8015C97C 0001
  801B2948 0001
  8015E2AC 00FF