Unused content
NOTE:Finish from https://web.archive.org/web/20210608114348/https://wiki.megamanmaker.com/index.php/Unused_content In Mega Man Maker, as with any game, there are quite a few ideas that have not been fully realized and assets made inaccessible through further updates. Many of these can still be uncovered hiding within the files of the game, and some can even be accessed in-game with a little bit of elbow grease, though it is not available through normal means.
Currently Unused Assets
These assets exist in the current build of Mega Man Maker but are unused.
Music
The NSF files for the first Mega Man game through Mega Man 6 contain most, if not all, songs from their respective games, many of which are not used in Mega Man Maker itself. This includes stage select themes, password menu themes, weapon get themes, cutscene themes, credits themes, boss select jingles, boss victory jingles, game over jingles, and possibly more.
Gemini Man
Gemini Man, coming from Mega Man 3, was originally going to be available from the launch of Mega Man Maker, with his data ported from the Make a Good Mega Man Level 2 engine. However, implementing him proved to be too challenging for several technical reasons, and thus was scrapped.
Attempting to play a level with the unused Gemini Man boss placed, will usually cause the client to crash upon attempting to spawn Gemini Man. By using text editing to place more than one boss, and spawning another boss before spawning Gemini Man, it is possible to load Gemini Man without the client crashing, but as the boss has no data assigned to it, it spawns as a 1x1 invisible solid tile.
As Gemini Man was never officially released, its Level Builder icon goes unused.
Pointkun cursor
There are additional sprites for Pointan with extra functions that include a writing bar made by former beta tester Dimpsy.
Since WreckingPrograms never intended to put these in the game and they were sprited without communication with him, the implementation of these animations was never attempted. Despite this, a few of these sprites can be often be seen used in release trailers for Mega Man Maker.
Japanese "Rockman Maker" Easter Egg Logo
Though this easter egg was removed when the logo changed from Mega Maker to Mega Man Maker, the sprite is still in the files of the game. This easter egg logo was used from versions 1.0.0 to 1.0.9, and has been unused ever since version 1.1.0.
Cirno special logo
In the files, there is a special version of the "Mega Maker" logo with Cirno from Touhou. This image is still in the game's files, but it was presumably left unused due to the game's rename before 1.1.0.
Mega Man 3 Wily 2 BG Alt
A version of Mega Man 3 Wily 2 BG that uses brighter colors, and has a slightly different wiring pattern, but it is unknown why it was not used.
"Prototype Block Dropper" Mega Man Sprites
Among the sprites for the playable character Mega Man, there are graphics for Mega Man attacking with an abnormally enlarged arm. It is assumed these are early prototype sprites for the Block Dropper weapon that were likely eventually abandoned in place of sprites more accurate to the source material.
Junk BG 1 Alt
A version of Junk BG 1 without animation, left static in its "power off" state. Likely replaced with the animated version of the BG later in development.
Junk BG 2 Alt
A version of Junk BG 2 without animation, left static in its "power off" state. Likely replaced with the animated version of the BG later in development.
Prototype Health and Energy Spawners
Unused sprites of three 16x16 blocks made by SnoruntPyro. According to Luigi, these were ideas for the health and weapon energy spawners that were experimented with and not removed afterwards. As of version 1.7.5, these can still be found in the game's files, despite Luigi stating that he has no further plans for the objects and would "rather keep his doodles to himself".
Air Tile 2
An unused alternate version of the Air Tile with the goblin face tiles found in Air Man's stage.
Bright Tile 2
While a tile from Bright Man's stage was implemented during the development of 1.7.0, the team decided to scrap it later due to being potentially seizure-inducing.
Time BG 2
A background from Time Man's stage drawn by beta tester BigMaster. According to him, the background was scrapped due to difficulties in making the wood beams in the background not resemble terrain and in adapting the background to the NES palette.
Clown BG (Alt)
A recolor of Clown BG based on the second part of Clown Man's stage. It was unused as the changes would not be perceived as different.
Previously Unused Assets
These assets where unused in previous builds for various reasons, but are currently used in the most recent build of Mega Man Maker.
Caricarry (Before 1.5.0)
The enemy Caricarry from Mega Man 9, was present in Mega Man Maker in 1.0.0, but would not see an official public release until 1.5.0.
Although the enemy was functional for the most part in older builds prior to 1.5.0, it had some collision and clipping issues when it came to solid tiles and objects, implying the enemy was not finished at this point in development.
Petit Devil (Before 1.5.0)
Both variants of the enemy Petit Devil from Mega Man 9 were present in Mega Man Maker in 1.0.0, but would not see an official public release until 1.5.0.
Prior to 1.5.0, Petit Devil's yellow and green variants were separate assets in the Level Builder. Petit Devil's green asset was edited to contain both the green and yellow enemy variants in 1.5.0, and the Petit Devil yellow asset was no longer needed.