Preview builds are now live! 🎉
Expect some bugs while in preview.
The user guide may lag behind builds during preview.
NMSE is a free, open-source desktop application for editing No Man's Sky save files.
It boats the most complete set of editable features among editors and supports every platform the game ships on;
Steam, GOG, Xbox Game Pass, PlayStation 4 & Nintendo Switch.
Download Latest Release · See The Website · Report a Bug · Request a Feature
User Guide
Latest Supported Game Version: 6.34 Xeno Arena
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For a full breakdown of all of the features, refer to the User Guide
NMSE is localised in 16 languages: English (UK), English (US), French, Italian, German, Spanish, Russian, Polish, Dutch, Portuguese, Latin American Spanish, Brazilian Portuguese, Simplified Chinese, Traditional Chinese, Japanese and Korean. Any help in making language support more natural is welcome!
You can view the NMSE development roadmap here for upcoming, planned and dreamt about features.
| Player | Inventories | Corvettes | Companions |
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| Fleet | Catalogue | JSON Editor | Localisation |
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- Download the latest release from the Releases page
- Extract the zip to a folder of your choice
- Run
NMSE.exe - Select your save slot and click Load
- If you save location is not auto-detected; use the Browse... button or File > Open Save Directory to locate your save directory
💡 Tip: NMSE auto-detects your save file location for Steam, GOG, and Xbox Game Pass
Wine based AppImage and DMG are available from the release page.
See the cross-platform guides for running NMSE via Wine:
A native cross-platform version is planned.
- User Guide - How to use NMSE panel by panel, feature by feature
- Developer Docs - Architecture, core logic, data layer, IO, models, and UI internals
- Contributing - How to contribute code, report bugs, and submit pull requests
- Code of Conduct - Community guidelines
- Support - How to get help
NMSE is licensed under the GNU Affero General Public License - see the LICENSE file for details.
# Clone the repository
git clone https://github.com/vectorcmdr/NMSE.git
cd NMSE
# Restore and build
dotnet restore
dotnet build
# Run tests
dotnet test NMSE.Tests/
dotnet test NMSE.Extractor.Tests/Requires: .NET 10.0 SDK · Windows or cross-compilation via
EnableWindowsTargeting
If NMSE has been useful to you, please consider supporting its development:
Your support helps cover hosting, tooling, and the many hours of development and testing that go into each release.
Every contribution - big or small - is greatly appreciated. ❤️
Thanks to these users for their generous support:
- Hello Games for creating No Man's Sky
- The NMS modding and save editing community
- All contributors and sponsors who help make NMSE better
Made with ❤️ by vectorcmdr
