Mega Man 4 Cheats, Codes & Passwords

Last Updated on Aug 16, 2023

This page contains cheats, hints, Easter eggs, secrets, and tips for Mega Man 4. We will continually update this page when we come across more useful cheats and tips.

Mega Man 4 Cheats For NES

Boss Weakness & Boss Order

The following list shows the easiest order to defeat the bosses in along with what their weakness is or what weapon should be used on them.

Boss	Boss Weakness
Toad Man	Mega Buster
Bright Man	Rain Flush
Pharaoh Man	Flash Stopper
Ring Man	Pharaoh Shot
Dust Man	Ring Boomerang
Skull Man	Dust Crusher
Dive Man	Skull Barrier
Drill Man	Dive Missile

Passwords

To enter passwords, go to PassWord on the main menu and enter the corresponding password to the password effect you desire.

Password Effect	Password
Ring Man defeated	A2, A3, A6, B6, D1, E3
Dive Man defeated	A2, A3, A5, A6, E1, E3
Skull Man defeated	A2, A3, A5, A6, E3, F2
Pharaoh Man defeated	A2, A5, A6, B4, D1, E3
Bright Man defeated	A3, A5, A6, C2, D1, E3
Toad Man defeated	A3, A5, A6, B1, D1, E3
Drill Man defeated	A2, A5, A6, C3, D1, E3
Dust Man defeated	A2, A3, A6, C5, D1, E3
All bosses defeated, all weapons and items	A1, A4, B5, E2, F1, F3
Wire Adopter, Balloon Adapter	A2, A3, A5, B2, D1, F3

Mega Man 4 Game Genie Codes

The following cheat codes are for Game Genie. These can be used on a Nintendo Entertainment System (NES) with a Game Genie device or you can use these on any emulator that supports Game Genie Codes. If you want a Game Genie Device, you can always check on Amazon for one.

Cheat Effect	Cheat Code
Infinite energy (health)	EUNGZAEP
Infinite lives	SZUGUAVG
Infinite weapon power	GXENESOO
Invincibility	AUUAIPAP
Jump higher	AAKEYPIE
Move super fast	ALIENE
No charge Mega Blast	AEOAIEPA
Slide faster	GEOAGPZA
Slide for longer periods	YXEAIOZO
Start with 6 lives	IAUKZIZA
Start with 9 lives	AAUKZIZE

More Cheats: NES