Mega Man 4 Game Genie Codes (USA)
This page contains the Game Genie codes I have for Mega Man 4 (USA), a game for the original NES (Nintendo Entertainment System). If you're playing with an emulator you'll typically be able to put these codes into the program directly through a built in option. Any of you who are old school and playing on a physical console, you'll have to purchase a physical Game Genie cheat device to use these codes.
If you don't see the code you want on this page, I recommend you return to my Mega Man 4 Guides Index and choose a different section.
255 Maximum Lives: NNNUOUPE
Continue with 9 Lives: PENEETZE
Start with 9 Lives: PAUKZIZE
Eddy Will Keep Giving Out Items Till You Leave The Screen: AAOZTLIA
Makes The Capcom Logo Go By Faster: NXEITE
Rapid Fire And The Bosses Barely Move: PILAUI
Walkthru When You Hold The B Button: VKLEGO
Walkthru [Can Get Hurt Once In Awhile]: YELAZO
When You Get Hit, Move A Lot Faster For A Couple Of Seconds: VKTALU
Start At Dr. Corsak's Castle: OAUKAI
Disable title demo: AANAYAPA
Use with Disable Screen Music Modifier otherwise the game will go into a demo and interrupt the song
Hyper Speed Music: AUVEALAP
Music Changes Randomly When You Shoot: IVOAIEPA
If you change your weapon it will permanently set the music to whatever the current song playing is
No Sound Effects: ELXAZYEP
No Sound Effects (Alt): EISAGZEY
No Sound When You Charge Your Gun: PEOAIEPA
When You Get Hit, The S.E. Are Of Dr. Wily's Space: VKYAAO
All Rush Are Blue Color: AZOOSA
Can Select Dr. Cossack's Final Stage From The Start: AOSEYAEI
Don't Flash When You Charge Your Gun: GUOAIEPA
Don't take damage from bad guys: GXVEIPSA
Enemies Don't Shoot: EYNYVLEI
Faster sliding: GEOAGPZA
Flash Brighter When You Charge Your Gun: ZOOAIEPA
Gameboy Mode: PINGTUAO
Get Items From Anywhere: ASKUKLEP
Infinite "energy" pods on pick-up: GXNPZTVG
Infinite Invincibility: SXSALAVG
Infinite lives: SZUGUAVG
Infinite weapon power: GXENESOO
Inifnite health & No knockbacks: AVVAGOOY
Instant megablast!: AEOAIEPA
Invincibility without invisibility: ZAXETVGL
Longer sliding: YXEAIOZO
Mega Man mega-jumping!: AAKEYPIE
One shot kills most enemies: EPUALLEL
Doesn't work on Dr. Wily
Shorter sliding: ZOEAIOZP
Slow Motion: ENNKTAEI
Small Weapon Capsules Teleport You To The 2nd Half Of The Stage No Matter Where You Are: TVZUOG
Stage Backgrounds Are Dark: EIXVGGEY
Start with 1 life: AAUKZIZA
Start with 6 lives: IAUKZIZA
Start with 9 lives: AAUKZIZE
Start with Invincibility: VVVEIISA
Takes Less Shots To Kill Enemies: ASNEAZEY
View Ending At Start Of Level: LPVKTVZA
Doesn't show Wily's lab scene
Walk Behind Backgrounds: ENNGYTEI
Kill An Enemy In One Shot [Not Bosses - Can't Slid: ZTGAAP
Bosses have almost no invulnerabilty time
PZVETUPE
PAVEYLAL
Faster Running
ZANKPTPA
ZEVALLPA
Mega Man Flashes In Cool Color Combinations
ZXXAPEZK
ZXXAZEZK
Most Objects Become Solid
SZXAPOOU
UINEYPEP
Play Game In Black And White Mode
OXKGGASX
POKGIEVN
Skip Intro Screens
AAONXNXY
KGUEAESK
Continually Hit Anywhere
GZKYXZEY
APKYKXOU
ATKYSXAZ
View Ending On Power On
Doesn't show Wily's lab scene
LPVKTVZA
TIUGASPU
SXEGGTAX