SMW Editor
SMW Editor: An open-source Super Mario World editor project whose planned tools are not yet usable. Ranked #47 of 49 in ROM Hacking Tools by our editors (3.0/10); pricing: Free plan; best for users tracking a planned Super Mario World editor.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forUsers tracking a planned Super Mario World editor
- Free planYes
- Paid fromNone
- ROM editingNo
- Facts checked5 Oct 2026
Where it wins
- Open-source project focused specifically on Super Mario World ROM hacking
- Plans editors for levels, overworlds, blocks, sprites, graphics, and music
- Repository includes instructions to build and run it with Rust
Where it doesn't
- Maintainers describe it as far from usable
- Planned editors and extensions are not completed features
- Current work focuses on reverse-engineering the original ROM
Our verdict on SMW Editor
SMW Editor is an open-source project intended as a multiplatform alternative to Lunar Magic for Super Mario World ROM hacking. It is aimed at users interested in following development of a game-specific editor, rather than people who need a working ROM-editing tool now. The maintainers describe the project as being in very early development and far from usable, so its proposed toolkit should be treated as a roadmap, not a set of available editing capabilities.
The planned scope is broad for a Super Mario World-specific project: level, overworld, block, sprite, graphics, background, assembly-code, and music editors are all listed, along with custom plugins and extensions. None of these listed editors is described as completed. Current work instead focuses on reverse-engineering the original Super Mario World ROM. That makes the project relevant to readers following a potential all-in-one editor, but not a practical choice for making edits today.
The project is open source and free, and its repository provides instructions for building and running it with Rust. That offers a starting point for technically inclined users who want to track or examine development, but it does not change the usability caveat. Choose SMW Editor if you are following an early-stage, game-specific project and can wait for planned features to mature. If you need to edit a ROM now, look for an alternative with completed editing functions.
Your product? Our editors can test SMW Editor in depth and publish a review, labelled as paid · from $99/mo →
SMW Editor pricing
SMW Editor fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| ROM editing | No |
| Patch formats | Not verified |
| Tile/sprite editing | No |
| Hex editor | Not verified |
| Supported platforms | Not verified |
| Game scope | Specific game |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 5 Oct 2026 |
Alternatives to SMW Editor
- YY-CHRA focused Windows dot editor for viewing and editing graphics in retro-game ROMs.8.4
- NUPSA free Windows desktop utility focused on creating and applying UPS patches.7.3
- HxDA broad Windows hex editor for binary work, rather than a ROM-specific hacking suite.7.2
See all SMW Editor alternatives →
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Featured on iTechGuides
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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