
Fallout Shelter Save Editor
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| Fact | Fallout Shelter Save Editor | NMSE (No Man's Save Editor) |
|---|---|---|
| API and SDK | The published README describes the file codec and build scripts but does not document a public API or SDK. | The published documentation describes an internal .NET application architecture but does not document a public web API or SDK. |
| Backups | Before the first export, the app downloads a timestamped copy of the original save and provides a change review. | NMSE automatically creates the ten most recent timestamped ZIP backups for each save folder. |
| Installation | The product is a JavaScript web page with nothing to install and requires JavaScript enabled. | Windows installation consists of downloading a release archive, extracting it and running NMSE.exe; Steam, GOG and Xbox Game Pass save locations can be auto-detected. |
| Licence | Original repository source is MIT licensed; included third-party game assets are excluded from that licence. | The current repository README identifies the project licence as GNU Affero General Public License 3.0 and excludes reverse-engineered game-derived portions from wholesale reuse. |
| Maker identity | The GitHub account identifies the maker as Derry Everson under username dneverson. | The maintainer identifies himself as Josh, also known as vector_cmd or josh_axey, and describes himself as a professional developer and 3D artist. |
| Praise: breadth | Nexus commenters praise the large feature set, family tree, and ability to handle many editing tasks in one interface. | A Reddit discussion repeatedly describes Vector NMSE as the best or go-to current save editor and praises its unusually broad feature set. |
| Purpose | A client-only web app for viewing and editing Fallout Shelter save files. | NMSE is an open-source save editor for No Man’s Sky. |
It suits Fallout Shelter players who want to inspect or change save data across supported devices. It may also appeal to users who want local browser processing and a backup before export.
NMSE suits No Man’s Sky players who want to edit supported saves on desktop, including inventories and discoveries. Linux and macOS users should be comfortable with its Wine-based releases.