No Man's Sky
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Created by

Mjjstral aka MetaIdea and Wbertro aka TheBossBoy

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About this mod

Revolutionary No Man's Sky AMUMSS (auto modbuilder/updater with MOD script definition system)
Fully automatic mod builder that automates every step of nms modding and provides an easy to use lua script mod definition system.

Permissions and credits
-> Looking for lua scripts, see: AMUMSS LUA MOD SCRIPT ARCHIVE <-

AMUMSS does NOT need updating to continue working when NMS updates.
       When the tool MBINCompiler.exe is updated, AMUMSS will download it automatically.

Questions will be answered if asked in NMS Discord: here


  • This tool works as long as MBINCompiler can compile/decompile the MBIN touched by the scripts
  • NEW version does requires .NET 5 Desktop Runtime x64 to be installed (a MBINCompiler.exe requirement)  Should be auto-installed.
  • Note: Sometimes, your anti-virus may detect some component of AMUMSS and block/quarantine it.  Be assure it is not a virus but its behavior may be interpreted as such by some anti-virus.  Please make sure to create an exception in your anti-virus when this happens.  Also a reboot may be required as some anti-virus do not correctly register the exception when created.

Always use NexusMODS for the latest version:

NMSPE (NMS PCBANKS Explorer) a GUI app to explore libMBIN.dll, NMS PAKS and Unpack/Decompile/Import-Search EXML content
AMM (_ModScript_Manager) a GUI app simplifying usage of scripts in ModScript folder
MFM (_MapFileMaker): a NEW console app to create MapFileTree files from EXMLs using drag/drop

Revolutionary No Man's Sky AMUMSS (auto modbuilder-updater with MOD script definition system)
Fully automatic mod builder that automates every step of NMS modding and provides an easy to use lua script mod definition system.

  • Installation:
  • * Get the latest release from AMUMSS latest releases on Github Link
    * De-compress the zip file to its own folder (like C:\AMUMSS)   Making the path to AMUMSS main folder short helps prevent bumping against windows path length limit (in rare cases)
    * No accented or special characters in the path
    * Always extract to a new folder on any drive, never in any System, Documents or game folder
    * Create an exception to AMUMSS main folder BEFORE executing anything
    * If the cmd windows closes immediately (or is blank) when double-clicking BUILDMOD.BAT:
              if you are on windows 7.  Try making '-UseColors N' in BUILDMOD_AUTO.bat and use it instead of BUILDMOD.bat

NEW in Version 4.0:
  • Follow the instructions for installation in the downloaded file, once extracted
  • Check the README files in the README folder

  • Amumss lua related support: NMS Modding Discord? - see #amumss-lua channel

    Many thanks to monkeyman192 for his huge efforts toward the NMS community and his work on the MBIN compiler.
    Many thanks to Wbertro (aka TheBossBoy) for much further improvements.
    Many thanks to current collaborators: alchemist, Babscoole, DarkScythe, Gumsk, lMonk, Lo2k, WinterTP, Traj on Discord
    Many thanks to all users (too many to list here) for bug reporting, further improvements and for sharing scripts.

    Original idea by Mjjstral aka MetaIdea
    Further ideas by Wbertro (aka TheBossBoy)
    Copyright MIT license
    Contact: [email protected] or [email protected]


    Join our NMS Discord for support, updates, news and help. We also have a ship customizer discord chat bot running as well as a unique chat mod

    Mention of a usefull side project: You can now finally create your own customized NMS ships and companions part by part and color by color with a unique web app: