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Mega Man 4

From The Cutting Room Floor
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Title Screen

Mega Man 4

Also known as: Rockman 4: Aratanaru Yabou!! (JP, translated as "Rockman 4: A New Ambition!!")
Developer: Capcom
Publishers: Capcom (JP/US), Nintendo (EU/AU)
Platform: NES
Released in JP: December 6, 1991
Released in US: January 15, 1992
Released in EU: August 10, 1993

EnemyIcon.png This game has unused enemies.
GraphicsIcon.png This game has unused graphics.
DebugIcon.png This game has debugging material.
RegionIcon.png This game has regional differences.

PrereleaseIcon.png This game has a prerelease article

Mega Man 4 is the first Mega Man game to have someone other than Dr. Wily as the final boss!

Oh wait, no, never mind.

Palette Editor

Megaman IV-paletteeditor.png

The Game Genie code PAEAPEGE activates a palette editor, similar to the one seen in Mega Man 5. Unfortunately, it's currently unknown where this code is actually supposed to be called from.

Unused Corridor

No, we didn't badly-crop the image… this time.

In Toad Man's stage, if you use a walk-through-walls code or edit the stage and move to the right side of the room just before the first Escaroo (room $0F, in the stage data), there is a completely empty corridor that's two screens wide (rooms $18 and $19) and has no exits. While a number of games – including this one – house empty screens or screens filled with junk data, they're generally left unlinked in their stage. Given this game's nature of having side-areas and detours, it seems likely that the black corridor was going to be one such side-area, but was discarded before release.

(Source: Boundary Break (original find), TCRF (further research))

Unused Object/Sprite Graphics

Pharaoh Man

Solve my riddle: What walks on two legs and is about to get his ass kicked?
A sphinx miniboss was removed from Pharaoh Man's stage before release (see the pre-release page for a video of the boss in action). While none of the background graphics for the sphinx remain in the ROM, some of the sprite graphics do.

What a way to live. DuckTales called, it wants its boulder back. Chin up?
The sphinx apparently got a bit of a makeover before being removed from the game entirely: the snake is smaller and in a different pose, the boulder was decreased in size (in the screenshot it's twice as wide as Mega Man, here it's as wide as him), and the sphinx's chin is much shorter.

pew pew pew
This appears immediately after the above graphics in the ROM, and is likely an updated version of the projectile the little snake fired at you. In the pre-release video, the bullet is small and non-animated.

Dive Man

Might want to turn around there. Look out below! MY EYES!
This seal robot was likely intended for Dive Man's stage, but it never shows up.

Some kind of...canister thing? It's stored with the sprites used in Dive Man's stage, right above the whale parts.

Miscellaneous Enemies

Some kind of telescoping thing that would stretch open vertically. Judging by the flashing light bulb weak point, it's probably an enemy.

(Source: BMF54123)

A little gun on wheels that could raise up to shoot Mega Man in the face.

(Source: BMF54123)

Miscellaneous Sprites

You did it! No, you did it!

Dr. Wily and Dr. Cossack have unused pointing sprites intended for dialogue usage. No idea if they were supposed to be pointing at each other or not.

(Source: The Mechanical Maniacs?)

Miscellaneous Objects


Assorted background tiles that are never loaded. They seem to be labeled "B1".

Regional Differences

Title Screen

Japan International
Rockman 4 - Aratanaru Yabou!! (Japan) 001.png Mega Man 4-title.png

The copyright was (once again) moved to the beginning of the game's boot up.

Cossack Catcher

In the Japanese version, the Cossack Catcher starts moving earlier.