Super Mario World 2: Yoshi's Island (Oct 2, 1995 prototype)

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Super Mario World 2: Yoshi's Island (Oct 2, 1995 prototype)
Build date Jun 26, 1995 05:59:00
Build name ys_rom_0,ys_rom_1,ys_rom_2,ys_rom_3
Dump status Released
Released by Anonymous
Origin 2018 Nintendo data breach
Lot 2018 Nintendo data breach
Files other.7z\SFC.7z\SFC\ソースデータ\ヨッシーアイランド\日本_Ver2\sfc\ys_rom_*.bin
Game Super Mario World 2: Yoshi's Island
System SNES
Genre Platform
Final build JP Jun 29, 1995
Release date JP Aug 5, 1995
US Oct 4, 1995
EU Oct 6, 1995
AU Dec 1995

A prototype of Super Mario World 2: Yoshi's Island, dated October 2, 1995, and stored in the form of four 512KB ROM files, probably intended for a prototype EPROM cartridge. A working ROM is produced by combining the four files and fixing the header. Most likely a prototype of the third revision of the Japanese version of the game.

Notes

To fix header:

  • 0x7FBD => 0x05
  • 5 bytes starting at 0x7FD5 => 0x20 0x15 0x0B 0x00 0x00.
The Cutting Room Floor research