Super Mario World (SNES)
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|Super Mario World|
Super Mario World is the first Mario game on the Super NES, rushed and hacked together in time for release.
Despite that, it's considered a high point of the franchise, partly due to the ridiculous amount of non-linearity and secrets within the levels. Also, Yoshi.
Document the discoveries posted here.
| Unused Levels|
Early levels that still linger in the ROM.
| Version Differences|
Those dolphins had it coming.
An unused sound that would be repurposed in Yoshi's Island for when the player hits Expansion Blocks, unlocks levels, and jumps on Fat Guys. Used in the ys_romX_0 build for when the player stomps on Georgette Jellies.
Unused Level Modes
Layer 1 horizontal into Layer 2 vertical
Sprite ID: EC
When this object is put into a level, the level will start out with a horizontal Layer 1 section, then transition into a vertical Layer 2 section. It only functions in levels with the layout mode set to 05 or 06.
Level modes: 1E and 1F
The game contains two translucent level modes: one for horizontal layer 1/background levels (1E), and one for horizontal layer 1/layer 2 levels (1F). Both modes are fully functional. Their position at the end of the mode list suggests they were "hacked in" somewhat later in development.
Early screenshots showed a flooded grassy area using mode 1F, with water on one layer and ground on the other. It may have been abandoned due to the obvious lack of a background layer when using this mode, and may have prompted the later addition of a non-transparent layer 3 water mode.
Unused Background and Sprite Graphics Indexes
Object graphics indexes: A, E
Graphics-wise, index A (Switch Palace 2) is identical to index 4 (Switch Palace 1), except it uses tileset 3, which is normally used by underground levels and castles. As a result, all tileset-specific objects are scrambled, making the index mostly unusable.
Index E (Underground 3) is identical to indexes 3 and 9 (Underground 1 and 2), except it uses a forest/mountain background GFX bank. This would have allowed for above-ground rocky levels, similar to those of World 6 in the New Super Mario Bros. series.
Sprite graphics index: F
Index F is identical to most of the other sprite indexes, save for the SP4 GFX bank (14), which only appears in one other index (B, Switch Palace). GFX bank 14 contains the pipe, block, Bullet Bill cannon, and Yoshi Coin graphics seen in every background tileset, none of which are used by any sprite in the game. It's possible that a set of sprite graphics existed in this bank at one point during development.