Mega Man: Dr. Wily's Revenge

Mega Man: Dr. Wily's Revenge is the first game in the Game Boy Mega Man series, starting a tradition of mixing bosses from a corresponding NES counterpart and its succeeding installment.

Early Fire Man Stage


On the stage select screen, change memory address to  or use GameShark code, and press Start. You should be taken to an early version of Fire Man's stage. Only three objects exist here: an extra life, a large weapon pickup, and Fire Man.

The stage layout is very different from the stage found in the final game, and even the one found in the unreleased prototype! It does share some elements with the prototype version's level, though.


 * The background tiles are darker.
 * Both the prototype and this version of the stage use tiles that go unused in the final version (see below).
 * The twin boss doors are in place. Like in the prototype, they don't actually work, so the designers put a ladder in place to reach Fire Man.

Drillun


A simple drill enemy is present with the rest of the enemy graphics, but it's never used in the final game. However, it is used in an unreleased prototype version of the game, and simply drops down from the ceiling to attack Mega Man.

Its name, Drillun, is located in the ROM with the rest of the enemy names found in the credits. It comes right before the Cutting Wheel.

Pico Pico


This enemy, used as part of a boss fight in Mega Man 2, never appears in this game. All that remains of it is its sprite and name in the enemy list.

Early International Title


At some point the US and European versions were going to keep the "World" suffix that the Japanese version used. No idea why they decided to change it.

Unused Music
One track is unused in the game. It seems to be an alternate version of the ending theme.

Unused Tiles
A few level tiles are unused in the final game. Some of those tiles appear in a prototype version of Rockman World.

Cut Man


While Cut Man's stage does have plenty of bottomless pits, there aren't any spikes present. In addition, if one of these is placed in the stage, it is miscolored and does not harm Mega Man at all.

Elec Man


Some unused cloud tiles. These should have appeared at the bottom of the screen, but don't.

Fire Man


These tiles are used as a border for the Dr. Wily logo in the prototype and early versions of the level. For whatever reason, they're not used in the final version.

Ice Man


Ceiling spikes. These never appear in Ice Man's stage, or anywhere else in the game for that matter.

Wily Fortress


Wily's Fortress has no ladders...in the final version, anyway. They do appear in a room of the prototype version, though.

Wily Spaceship


Two different blocks and what appears to be ceiling and floor spikes. The prototype uses the first block in one room.