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Mega Man II

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Title Screen

Mega Man II

Also known as: Rockman World 2 (JP), Rockman II (CN)
Developer: Thinking Rabbit[1]
Publishers: Capcom (JP/US/CN), Nintendo (EU)
Platform: Game Boy
Released in JP: December 20, 1991
Released in US: February 1992
Released in EU: 1992
Released in CN: 1996


GraphicsIcon.png This game has unused graphics.
MusicIcon.png This game has unused music.
RegionIcon.png This game has regional differences.


PrereleaseIcon.png This game has a prerelease article

Mega Man II is, as you may have guessed, the followup to the first Game Boy entry. It was made in five months by a completely different development team that knew little about the series, and it shows.

It's also one of the few Game Boy titles to receive an official Chinese release.

Sub-Pages

Read about prerelease information and/or media for this game.
Prerelease Info

Robot Master Select #2

Four more

Set memory address CF66 to 04-07 on the Robot Master select screen and you'll be able to choose the Mega Man 3 Robot Masters. Interestingly, they have animations and text strings that aren't used anywhere else in the game. They were clearly meant to be used, but they aren't. After beating the Robot Master, you'll be thrown back to the stage select.

Their stage select icons can be found below.

(Source: Original TCRF research)

Unused Music

Seems to be an alternate version of the ending theme.

(Source: Original TCRF research)

Unused Borders

Mockup In-Game
MMII - Unused Borders (Mockup).png MMII - HUD Normal.png

The HUD uses two different blank white tiles, $70 and $5D. Editing the $5D tile's graphics reveals that the HUD was originally supposed to have borders, similar to an early build of Dr. Wily's Revenge.

Unused Level Tiles

Air Man

MMII - Air Man (Unused Tiles).png

There are some tiles of clouds that are unused in the stage.

Crash Man

MMII - Crash Man (Unused Tiles).png

Two unused tiles. One was probably meant to be used for clouds like in the NES version of the stage; the final version uses mountains instead. The other appears to be a connector for two black orb tiles.

Metal Man

Apparently Metal Man's factory's power was shut off in the Game Boy release

The gears in Metal Man's stage are supposed to be animated, like in the NES version. The two gear frames are loaded into memory, but the developers never got the actual animation part of this done.

MMII - Metal Man (Unused Tiles).png

A tile at the bottom of the mats that is unused.

Wood Man

MMII - Wood Man (Unused Tiles1).png

Two tiles possibly from an early version of the floor graphic or from an unused platform on stage.

MMII - Wood Man (Unused Tiles 2).png

Some tiles of tree leaves from the background that are unused in the stage.

Needle Man

He's such a kidder

Some background and foreground tiles, as well as some spikes. The long vertical background piece (the one with the hole in it) is used in the NES version of Needle Man's stage for the inside sections. The tiles at the bottom are used in the NES version as floor tiles.

Magnet Man

Ignore the file name - Spark Man is in Mega Man III!

More generic foreground and background tiles. The first tile is based on the tiles used in the NES version for the inside sections of Magnet Man's stage. They were replaced by the more eye-pleasing striped tiles. The next two tiles are intended for the outside background, but aren't used. The last tile should have been placed above the magnets (similar tiles appear in the NES version, and there's even space for them in the Game Boy version), but they're not.

Hard Man

Rockin'

A rocky platform, clearly modeled after the NES version. The final game's Hard Man level is decidedly industrial in theme, though it may have changed during development.

MMII - Hard Man (Unused Tiles).png

Just an unused cloud tile.

Top Man

Know why they call him Top Man? 'Cause his head's shaped like a top. Yep

The NES Top Man stage had spikes, so it would make sense for them to appear in the Game Boy version, but nope. The other two tiles are background tiles that never have a chance to get used. They're completely unique to the Game Boy version, too.

MMII - Top Man (Unused Tiles).png

An unused background tile from Tama's room.

Wily Castle

MMII - Wily Castle (Unused Tiles).png

Unused tiles for the computer-thing seen in the second room of Wily Castle's opening cutscene. The final game reuses graphics from the teleporters instead.

MMII - Wily Castle (Unused Tiles2).png

These darkened background wall graphics are likely used as a shadow for the teleporter room's platforms, but they're not used for some reason.

Time Warp

Let's not and say we did

Short and long pipes. Their actual function is unknown. One part of them is actually used in-game, but it's so ill-fitting that it might be a programming error.

(Source: Original TCRF research)

Unused Graphics

Unused graphics not related to the actual levels.

Mega Man

Unused Used
Just moving forward, little by little It must be hard when your right foot shrinks while trying to walk

While tiles for Mega Man inching forward are present as usual, only one of them is actually used in-game, resulting in one of his legs inexplicably shrinking when he first moves forward.

Early Final
There's a hole going right through this one!
okay now it's a reflection

This early buster shot based on the NES sprite would get replaced with its equivalent from the first Game Boy entry.

Bosses

Crash Man

Early Final
Oh my God OH MY-Hey, wait, that looks pretty good, actually.

A poorly-made early walking frame for Crash Man. Luckily, it was replaced with a much better sprite.

Metal Man

Early Final
Its appearance betrays its brokeness Metal / Shadow Blade hybrid

An early, single-framed version of the Metal Blade can be found in Metal Man's sprite set. This 16×16 sprite seems more accurate to the NES version than the final sprite, which uses two 8×8 tiles that are flipped vertically and horizontally for each frame.

Needle Man

MMII-NeedlemanShoot.png

An unused firing frame for Needle Man. While an equivalent frame is used in Mega Man 3 and should have been used here, the game instead erroneously alternates between the first firing frame and the standing frame when Needle Man shoots his Needle Cannon.

Unused Used
MMII-NeedlemanNeedle.png MMII - Needleman Needle (Used).png

An unused tile for the needles themselves also exists. This tile was again used in Mega Man 3, but for some inexplicable reason this game opts to use a different, horizontally facing needle sprite, despite the fact that Needle Man still only fires them diagonally downwards.

Magnet Man

MMII - Magnet Man (Unused).png

An unused frame from Magnet Man's intro animation. Although this is used in Mega Man 3, here his animation is only two sprites, the same as every other Robot Master in the game.

Quint Intro

Look at him go
An unused intro animation for Quint. He just stays still in the final version.

Enemies

Giant Springer

MMIIMissile.png
A diagonal sprite for the missiles Giant Springers shoot. A different diagonal sprite is used for said missiles in Mega Man 3, but not here for whatever reason.

Metall

Early Final
MMII - Met (Early Version) SP1.png MMII - Met (Early Version) SP2.png MMII - Met (Early Version) SP3.png MMII - Met (Early Version) SP4.png MMII - Met (Final Version) SP1.png MMII - Met (Final Version) SP2.png MMII - Met (Final Version) SP3.png MMII - Met (Final Version) SP4.png

Leftovers from a slightly off-model early version of the Metall enemy are part of the sprite set for Hard Man's stage. They were later updated to match the NES version of Mega Man 3. No early version of their hard hat seems to exist.

Peterchy

Unused Used
Oh you woke up! Good night!

An unused sprite of Peterchy on both legs with its eye open. Its eye is closed in the used sprite. (Also note the different shading.)

Petit Goblin

Early Final
No comment Still no comment

Some kind of face thing. This appears in the Air Man stage's object set, possibly being an early version of the Petit Goblin.

Pipi

Early Final
hahahaha what Better

A hilarious-looking early Pipi is part of Wood Man's sprite set. These enemies appear in Wood Man's stage in the NES game but not in the Game Boy version, so their art was never updated.

Early Final
Bite-sized More filling

The Pipi egg is a dinky 8×8 sprite in the Wood Man sprite set.

Early Final
small bird

The Copipis that hatch from the egg have only one frame of animation in the Wood Man set.

Fonts

MMII - Unused Font3.png
In the font graphics used for the weapons menu are some arrows that never get used.

It's a font, I have nothing to say
A font stored near the font used in the credits. The actual credits use a different font style, with this shaded one resembling the Stage Start text when selecting a robot master. Also, the unused arrows make a reappearance.

MMII - Unused Font1.png
An unused font that goes from 0 to F. Used to pad out unused parts of graphics banks. Hiden Inyou Kikouhou: Ca Da uses the same graphics for the same padding purposes, once again unused there.

MMII - Unused Font2.png
A number font that's used... in an entirely different game for the score display. Since the two games share staff and some code, it may be a leftover or a stray shared asset.

MMII - Unused Font4.png
Near the select stage graphics is a small unused arrow of unknown purpose. Pointy.

Others

Earth

Full In-Game
You should know what this is I mean really now

The Earth graphic is slightly larger than it appears in-game - 16 pixels are cut off from the bottom.

Explosions

Unused Used
KAA- -BOOOOM!

While there are three explosion effects used throughout the game, stored alongside them in the sprite set is an unused fourth one.

(Source: Original TCRF research)

Stage Select Robot Masters

Early Final
Hard Man looks rather diminutive, doesn't he? Unlike every other MM game, you use teleporters to get to these guys' stages

Early versions of the Robot Masters appear in the ROM.

Select a character!
The early graphics actually use the background palette. They were probably used in a stage select like the one in Mega Man: Dr. Wily's Revenge.

The Mega Man 3 robot masters also have full intro animations. A demonstration can be found in the video above.

Wily Shuttle

Unused Used
HIT THE DECK He's backed away...for now

A number of different-sized images for Dr. Wily's spaceship.

Unused Damage Values

Modifying the game to have all weapons earlier than usual results in some interesting damage data that goes otherwise unused:

Weapon Damage Data
Boss Mega Buster Metal Blade Air Shooter Crash Bomber Leaf Shield Needle Cannon Magnet Missile Hard Knuckle Top Spin Sakugarne
Crash Man 01 00 02 00 00 00 00 00 00 00
Metal Man 01 0A 00 05 00 00 00 00 00 00
Wood Man 01 05 01 02 00 00 00 00 00 00
Air Man 01 00 00 00 07 00 00 00 00 00
Top Man 01 00 01 00 00 02 01 04 00 02
Needle Man 01 00 03 01 00 00 01 00 05 02
Magnet Man 01 02 00 01 00 03 03 02 01 02
Hard Man 01 01 00 01 00 00 04 03 00 02
Quint 01 02 02 04 02 02 02 05 02 00
Wily Machine II 1st 01 00 00 00 00 00 00 00 00 00
Wily Machine II 2nd 01 00 00 00 00 00 00 00 00 02
Wily Machine II 3th 01 00 00 00 00 00 00 00 00 02

Notes:

  • Weapons obtained by the Mega Man 3 Robot Masters and Quint do not damage the Mega Man 2 Robot Masters, instead ricocheting off of them as they appear to be invulnerable.
  • Metal Man is once again hilariously weak to his own weapon, taking 10 points of damage.
  • Hard Man and Magnet Man take 3 damage from their own weapons; a similar mechanic is present in the original Mega Man 3. Weirdly, Needle Man and Top Man in this game don't share this hidden stat.
  • Sakugarne damages the Mega Man 3 Robot Masters for 2 damage each.

Regional Differences

Title Screen

Japan US/China
Rockman World 2 (J) title.png MMIITitle.png

As usual, the title screen was modified for the US release. However this also included bumping the copyright date, and updating the copyright info to include Capcom USA. The European version mostly takes after the US version, but alters the licensing text to say "Licensed To Nintendo".

Despite being released four years later, the Chinese release simply uses the US ROM untouched from its original release, despite the added Chinese name on the label claiming the game's name as "Rockman II", as well as the already updated EU release being present.

Top Man's Stage

Japan/US/China Europe
Mega Man II U Topman.png Mega Man II E Topman.png

One block was removed from this sliding tunnel. In the Japanese and American versions Mega Man would reach the end of the tunnel and stop moving but remain in his sliding animation, which looked rather silly.

Needle Man's Stage

Japan/US/China Europe
Mega Man II U Needleman.png Mega Man II E Needleman.png

The platform at the top of this screen was lengthened to keep the player from jumping on top.

Room Before Final Boss

Japan/US/China Europe
Mega Man II U b4final.png Mega Man II E b4final.png

The platform with a second Scworm generator was removed, replaced with a large background... bubble? Orb? Planet? Round thing.

End Credits

Japan/US/China Europe
Mega Man II U sube.png Mega Man II E subee.png

The Have "Su" Bee's name had its spelling corrected. The correct spelling actually already exists in the other versions of the game, but the name ends up getting cut off in-game due to it being too long.

References