Newest Hacks

F-Zero Beginnings Power Rangers - The Movie FastROM Kamikaze Mario DX+ Faxanadu Robust

Newest Translations

Dr. Chaos Sword of the Berserk - Guts' Rage Astyanax Urban Strike

Newest Utilities

Mystic Editor Sable Text Inserter Jade Cocoon Randomizer Final Fantasy IV Tweak

Newest Documents


Newest Reviews

Legend of Zelda - Echoes of the Past Rockman 4: Minus Infinity Super Sonic Strange Mario Bros.

Newest Homebrew

Game Boy Advance RGB Colour Test (GBA) Plummet Challenge Game Carpet Shark Lost in Space


Level Editors


Editroid is a Metroid level editor that allows you to edit map and room layout, palettes, item locations, and much more. Editroid can also expand a ROM to accommodate larger and more detailed maps and even animated background tiles.

For more advanced users, Editroid includes a built-in assembler for both general purpose ASM hacks as well as screen-load routines that can modify the behavior of rooms in ways that simple data editing can’t. Version 3.7 allows you to add multiple ASM files to better organize more complex projects.

For more information about Editroid, see


User Review Information

Very good editor.

Reviewed By: gravitygoesup1 on 28 Jul 2020

As I am someone who does not understand NES assembly language whatsoever, Editroid makes it so much easier to make Nestroid hacks. I am currently working on a project and it has been a long process but the editor gets it done. The interface is intuitive and makes it really easy to erase the map and start from scratch. I highly recommend expanding the rom so you can create as many unique rooms as you want, because the original game size doesn’t allow for much room. The editor is powerful and lets you basically make whatever kind of game you want.

Some new tools/stuff I recommend implementing in the next version(s) are:

  • graphics editor inside the editor
  • custom music and sound effects file import
  • more modern interface design and not like windows XP
  • easier way to generate password tracking data
  • *title screen editor* (I REALLY want this)

That’s all I can say. It’s a great editor, but has room for major improvements as well. I hope to see what snarf can do with this in the future!

Version 3.7 Recommended - Yes

User Reviews
Very good editor.gravitygoesup128 Jul 20203.7Yes
The creative freedom granted by Editroid is vastGrimlock20 May 20153.7Yes
The best editor for Metroid ever made!mrrichard99927 Jul 2014N/AYes