The following are known Action Replay Codes for Daffy Duck: The Marvin Missions on Super Nintendo Entertainment System (SNES).

• Infinite Lives
  7E1F1003
• Infinite Health
  7E1F0E09
• Infinite Nutty Attacks
  7E1F1609
• Infinite Fuel
  7E1F4509
• Set Infinite Freeze Gun
  7E1F2A99
• Set Infinite Electricity Gun
  7E1F2C99
• Set Infinite Three-Way Gun
  7E1F2E99
• Set Infinite Bomb Gun
  7E1F3099
• Set Infinite Anti-Matter Gun
  7E1F3299
• Invincibility
  7E1F12FF
• Infinite Cash
  7E00F899
• Infinite Continues
  7E1F8299
• Infinite Continues (Different Code)
  82CADE00
• Switch F/X On To Levitate
  7E053DFE
• $1100 Infinite
  7E00FF80
• Start With 1 Life
  80990301
• Start With 9 Lives
  80990309
• Start With 25 Lives
  80990325
• Start With 51 Lives
  80990351
• Start On Level 1-2
  80995101
• Start On Level 1-3
  80995102
• Start On Level 1-4
  80995103
• Start On Level 2-1
  80995104
• Start On Level 2-2
  80995105
• Start On Level 2-3
  80995106
• Start On Level 2-4
  80995107
• Start On Level 3-1
  80995108
• Start On Level 3-2
  80995109
• Start On Level 3-3
  8099510A
• Start On Level 3-4
  8099510B
• Start On Level 4-1
  8099510C
• Start On Level 4-2
  8099510D
• Start On Level 4-3
  8099510E
• Start On Level 4-4
  8099510F
• Start On Level 5-1
  80995110
• Start On Level 5-2
  80995111
• Start On Level 5-3
  80995112
• Start On Level 5-4
  80995113
• Start With No Nutty Attacks
  809A0500
• Start With 3 Nutty Attacks
  809A0503
• Start With 5 Nutty Attacks
  809A0505
• Start With 7 Nutty Attacks
  809A0507
• Start With $2500 Instead Of $1500
  809A0C02
• Start With $3,500
  809A0C03
• Start With $9,500
  809A0C09
• Start With $30,500
  809A0C30
• Start With 10 Ammo For All Guns (Except Blaster)
  809A1610
• Start With 50 Ammo For All Guns
  809A1650
• Start With 90 Ammo For All Guns
  809A1690
• Start With Almost No Fuel
  809A2900
• Start With 2X Fuel
  809A291B
• Start With 3X Fuel
  809A2927
• Start With 0 Gems
  809A2E00
• Start With 10 Gems (2 Continues)
  809A2E10
• Start With 25 Gems (5 Continues)
  809A2E25
• Infinite Lives
  809BE900
• Start With 1/2 Health
  809F2006
• Start With 3/4 Health
  809F2009
• Fuel Is Consumed At 1/4 Normal Rate
  80ADBB06
• Fuel Is Consumed At 1/2 Normal Rate
  80ADBB0C
• Fuel Is Consumed At 3/4 Normal Rate
  80ADBB12
• Infinite Ammo (Must Have Some Ammo For The Gun To Be Selectable)
  80B17C00
• Infinite Nutty Attacks
  80B33BAD
• Invincibility
  80B7E2AD
• Fuel Power-Ups Are Worth 1/2 As Much
  80D99C06
• Fuel Power-Ups Are Worth 2X
  80D99C1A
• Juice Cans Set Health To 1/2
  80DA6206
• Juice Cans Set Health To 3/4
  80DA6209
• Extra Life Power-Ups Don’t Work
  80DBE800
• Extra Life Power-Ups Worth 2
  80DBE802
• Extra Life Power-Ups Worth 5
  80DBE805
• Freeze Gun Ammo Power-Ups Are Worth 20 Instead Of 10
  80DCB720
• Electricity Gun Ammo Power-Ups Are Worth 20
  80DD8320
• Three-Way Gun Ammo Power-Ups Are Worth 20
  80DE4F20
• Bomb Gun Ammo Power-Ups Are Worth 20
  80DF1B20
• Anti-Matter Gun Ammo Power-Ups Are Worth 20
  80DFE720
• Gem Power-Ups Worth 0
  80E0AA00
• Gem Power-Ups Worth 5 (1 Continue)
  80E0AA05
• Freeze Gun Ammo Is Free
  82C0A900
• Freeze Gun Ammo Is $200
  82C0A920
• Electricity Gun Ammo Is Free
  82C0AB00
• Electricity Gun Ammo Is $150
  82C0AB15
• Three-Way Gun Ammo Is Free
  82C0AD00
• Three-Way Gun Ammo Is $150
  82C0AD15
• Bomb Gun Ammo Is Free
  82C0AF00
• Bomb Gun Ammo Is $150
  82C0AF15
• Anti-Matter Gun Ammo Is Free
  82C0B100
• Anti-Matter Gun Ammo Is $200
  82C0B120
• Jetpack Fuel Is Free
  82C0B300
• Nutty Attacks Are Free
  82C0B500
• Nutty Attacks Are $400
  82C0B540
• Gems Are Free
  82C0B800
• Extra Lives Cost $500
  82C0BA00
• Extra Lives Cost $1,500
  82C0BA01
• Bought Freeze Gun Ammo Is Worth 20 Instead Of 10
  82C0F820
• Bought Electricity Gun Ammo Is Worth 20
  82C15920
• Bought Three-Way Gun Ammo Is Worth 20
  82C1BA20
• Bought Bomb Gun Ammo Is Worth 20
  82C21B20
• Bought Anti-Matter Gun Ammo Is Worth 20
  82C27C20
• Bought Fuel Is Worth 1/2 As Much
  82C2DF06
• Bought Fuel Is Worth 2X As Much
  82C2DF1A
• Bought Gems Worth 0
  82C38B00
• Bought Gems Worth 5 (1 Continue)
  82C38B05
• Extra Lives Cannot Be Bought
  82C3E700
• 2 Extra Lives For Each Life You Buy
  82C3E702
• 5 Extra Lives For Each Life You Buy
  82C3E705