EarthBound: Untold World Editor v0.6, released February 29, 2000.

Programmed and designed by Kyosuke and Wam. Kyosuke (username: calvin, bright.net/~calvin/) was a known figure in the early EarthBound fan community, credited as the originator of "EarthBound Flukes" and listed on Starmen.net's fan games directory.

This map editor was built as a companion tool to a planned fan game, EarthBound: Untold — a Windows-based game featuring new short story adventures set within the original EarthBound world. The fan game was never completed.

The editor allows users to load a tile sheet (tiles.bmp included) and create/save .map files.

Listed on Starmen.net's fan games page (archived June 2, 2001).

Project homepage (archived April 29, 2001 — readme and screenshot captured but download never archived):
Earthbound Untold

This copy was recovered from a personal PC backup circa 2001–2002 and is believed to be the only surviving copy of the download.

Contents:
— Mapedit.exe — the map editor (Visual Basic 5)
— tiles.bmp — EarthBound-style tile sheet
— Readme.txt — original readme by Kyosuke
— MSVBVM50.DLL — Visual Basic 5 runtime, included for self-contained execution on modern Windows