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As discussed a few times across multiple socials, here is a proof of concept build of Yoshi's Island: The Definitive Edition, an alternate project of Super Mario World: The Definitive Edition.

This build currently only contains a bunch of .ASM stuff, but I plan on eventually adding things like SMA3 stuff, etc.

Currently Added features:

  • Added a better system for Middle Rings
  • Added a font expansion to the ROM, containing things like characters that will later be available from SMA3, custom characters, and fixes to unaligned characters in the font
  • Restored an unused feature which saves player lives upon resets
  • Fixed a bug where landing on a moving shell wouldn't always stop it from motion
  • Added SFC controller buttons to the button colors on the overworld
  • Includes an alternate patch that mutes the annoying Baby Mario crying noises from taking a hit

This hack has also been tested on original hardware using an SD2SNES flashcart and has been confirmed to work on it.

Hashes

Filename: Super Mario World 2 - Yoshi's Island (USA).sfc
CRC32: d138f224
SHA-1: c807f2856f44fb84326fac5b462340dcdd0471f8
Verified: Nintendo - Super Nintendo Entertainment System v.20260614-014159 (No-Intro)

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Last comments

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riggles 2026-04-28
Think it's possible to remove the top and bottom black bar in the main game? Might take some overclocking if it was done out of a performance necessity, not a problem with emulation or fpga though. We've seen black bar removal for Symphony of the Night, without a performance impact on console, so maybe that wouldn't be the case here either.
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