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Metroid II: Return of Samus (GB)

 'Metroid II: Return of Samus' title screen Metroid II: Return of Samus, whose subtitle has become increasingly irrelevant with each passing interquel, is the second game in the Metroid series. It was released for the Game Boy in 1991.

All information relates to the specific ROM: “Metroid II - Return of Samus (UE) [!].gb”, it is 256 KB in size (262,144 bytes). SHA1: 74A2FAD86B9A4C013149B1E214BC4600EFB1066D

Editors and Utilities

  • M2Edit - Feature-bare editor from 2004, but it's all we got for now.
  • ROSE - A work in progress Metroid II Editor that is long overdue. Browser based.
  • LAMP - A different work in progress Metroid II Editor. Not browser based.
  • Metroid II Music Tools - Utilities that deal with exporting/importing Metroid II's music data.


A list of guides created by the community, from manuals on the tools themselves to advanced guides relating to ASM, its all here.

Editor and Utility Manuals

Manuals of the workings of all the editors and utilities available to you, detailing all their functions.

Basic Guides

These guides cover all the basic things around editing Metroid II, as well as serving as a good starting point for learning how to get into Metroid II hacking!

Intermediate Guides

These guides assume you have a good basic knowledge about editing Metroid II already, you should probably be comfortable with using (editor) by now and be moving onto using tools like a hex editor.


Expert Guides

These guides could be pretty complex, you should probably be comfortable with assembly by now.


Wiki Based Hacking Resources And Information

This segment is reserved for technical information on Metroid II, to be used as reference material for hackers, or for the curious wanting to know what makes Samus tick, or possibly you are interested in making a fan game and want to know how Metroid II does things!

Locations of Data

Technical Details

Disassemblies of Data

Explanation of Mechanics

return_of_samus.txt · Last modified: 2023/07/28 15:18 by thedopefish