User:Hiccup/Super Mario Bros. 3 New Content

Super Mario Bros. 3

Would-Be Levels
There a total of NUMBER empty would-be levels in this bank. Nintendo probably left placeholders to facilitate constructing a new level, likely done by hand after being drawn on paper.
 * Underground: 35
 * Hills: 3
 * Sky/Ice: 3
 * Sea/Toad House/Vertical Level: 54
 * Desert: 3
 * Fortress: 1

Duplicate Bowser Room
There is an unused Bowser Room, identical to one of the ones actually found in the game. Unsure why this exists; perhaps it was originally a quick test area for development of the final boss code.

VS Player Respawn
There is code that allows the Player who died to reappear at their starting position, flashing with temporary invincibility.

Revisit Toad Houses
There is leftover code in that shows that once Toad Houses would be given an "ID" by the map, and tracking provided for what chests had already opened, suggesting you would be able to revisit the Toad House multiple times to get more items. Maybe there was a time when there was no inventory, or it was just meant to be a handy convenience.

Small Chests
Furthermore, there is support for four little chests, These are similar in appearance to chest found in gameplay and have a lid open frame. Maybe regular powerups would be in the little chests and super suits and the like in big ones, similar to the giant [?] blocks. This also contains the same unused tracking code as the big chests for having some already opened.

Large Fort
There's a defined-but-unused "large Fortress" tile. Which even has exception code to "crumble" after it has been completed! The only problem with this tile is that it is usually corrupted by map animations.

Unused Enterable World Map Tiles

 * Alternate color of the World 5 spiral castle
 * A path segment which goes nowhere
 * The dancing flower from World 4 - It's possible that these were mistakes, or maybe there really was to be some kind of plant-themed level.

White W8 Airship
The Bonus Controller that triggers White Toad Houses has code to trigger a white W8 Airship that sends you to World 7-5. It's purpose is not clear, though it may have been a scrapped bonus.

Unused Animation Type
A routine exists for a "glowing coin" effect like SMB1 uses. Not that glowing coins are unheard of in SMB3 (they exist on the Coin Ship), but it is curious why this routine sits here, unused. It is possible that an early SMB3 would have used glowing coins prior to the implementation of level animations.

Unique Toad House/P-Switch Music Leftover
Toad House and P-Switch have the same song in-game, but are in fact two different queue numbers. This suggests that there was to be a different song for one of the two. It is possible in some early version that a song was cut from here.