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Super Mario World 2: Yoshi's Island

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Super Mario World 2: Yoshi's Island (sometimes referred to simply as Yoshi's Island) is a 2D platform game for the Super Nintendo, developed by Nintendo EAD. The game is the prequel to Super Mario World and chronologically the first in the Mario franchise. The game is notable for introducing a time-based health system rather than hit points, an anomaly to what many platform games typically did in this game's time period. Rather than relying on powerful pre-rendered graphics as its contemporary, Donkey Kong Country did, Super Mario World 2: Yoshi's Island employs a very distinct, stylized arts and crafts style to stand on its own. The game makes use of the Super FX2 graphics chip (one of only four commercially-released SNES games to do so), which allows for larger, more detailed sprites and more advanced effects that emulate 3D space.

Hacking Tools

Golden Egg

Main Article: Golden Egg

Golden Egg is the level editor of the game, therefore the basic and essential tool.

YI Entrance Editor

Main Article: YI Entrance Editor

YI Entrance Editor is a pack of 2 tools made by Romi. The first one edits the start position of Yoshi in every level, while the second one edits the midway entrances (the position where you start after you collect a midway ring in-game), both features that Golden Egg lacks. The latter is currently deprecated by Raidenthequick's Better Middle Ring ASM patch.

Ycompress

Main Article: Ycompress

Ycompress decompress and dump most of the graphics in Yoshi's Island, so that they can be modified by a graphic editor. It can then be used to recompress and insert the graphics back into the ROM.

Yoshi's Island Level Tool

Main Article: Yoshi's Island Level Tool

Yoshi's Island Level Tool can be used to export and import level data and entrances from/to any rom (another lacking feature of Golden Egg). It can be also used to apply Asar's patches.

BTD6_maker's YI Text Editor

Main Article: BTD6_maker's YI Text Editor

BTD6_maker's YI Text Editor (also known as BYTE) is is a text editor written in Python, and it's used to edit various text in the game, such as level names and message boxes. The difference between this and YIPES (a deprecated text editor) is that YIPES may occasionally overwrite important data, which sometimes corrupt the level data.

ASM Patches

List of Yoshi's Island ASM patches

Tutorials

Technical Information

Special Chips

SuperFX 2

See also: Super FX