Category Archives: Rom Hacking

Editroid 3.7

Version 3.7 of Editroid is available. You can get it at’s page for Editroid. Version 3.7 adds support for multiple ASM files to manage more complex ASM hacks.

Automap Without The Map

I’ve been asked if there was a version of the Automap Plus patch without the automap. In other words, just the partial heart pieces in the HUD and faster life refilling with potions and fairies. Easy enough: just chop all of the map-related stuffs from the code, and viola. Download the IPS patch with source […]

Editroid 3.6

A new version of Editroid has been released with some bug fixes (namely a bug that prevented certain screen-load code from running). Grab it from the RHDN Editroid page. Everything should work the same as Editroid 3.5, except fewer bugs.

Mountain Challenge by Trax

From Trax, the author of the Contra hack Revenge of the Red Falcon, comes an early Christmas present: a nifty Contra hack titled Mountain Challenge. It’s short, but sweet. It’s a one-level hack where you race to the top of the mountain as fast as possible. The difficulty is dialed back a couple of notches compared to Revenge of the Red Falcon, but you’ll have plenty of chances to die running full speed ahead, trying to top your best time.

ROM Hasher 1.0

ROM Hasher calculates hashes and looks ROMs up in a ROM database to help identify and verify ROM images. This tool is geared toward for the purpose of generating ROM hashes to include with hack/translation submissions and for verifying ROMs before applying patches.

ASM Hack: Elevator to Same Level

Here is a nice, small hack that allows you to add an elevator to Metroid that, rather than bringing the player to a different level, brings the player to a different part of the same level. This hack is very unlikely to work with any other hack that involves ASM since it uses the memory […]

Editroid 3.5

Time to release a new version of my Metroid editor. This version allows you to add ASM to each screen that will run when the screen loads. It includes a built-in assembler so you can do everything right in Editroid.


I’ve decided to share a very old and imcomplete program I wrote a very long time ago. Combificator was a tool to edit the vertical columns that screens in The Legend of Zelda are constructed from. The program was abandoned because it kept causing strange glitches in the ROMs

Editroid: Enemy Slots

This is just a quick explanation of a quirk in enemy placement in Metroid.Enemy Slot The game engine is capable of showing up to six enemies at a time. Each enemy is stored in an “enemy slot” in memory. The unusual thing about the enemy slots is is that rather than having the game load […]

Metroid Hacking Resources

This is my attempt to collect and catalog useful resources for Metroid hacking. If anyone wants to make an addition, feel free to tell me in the comments.