SMEDIT review
A focused desktop toolkit for editing Super Metroid rooms, sprites, enemies, and IPS patches.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
SMEDIT is a cross-platform desktop editor for hacking Super Metroid ROMs, aimed at solo creators focused on that game. Its scope goes beyond room editing: the tool covers tiles, enemies, sprites, sound, and the pause-screen minimap. It is described as open source, and builds are listed for macOS, Windows, and Linux. For someone working on Super Metroid rather than looking for a general ROM editor, the feature set brings several edit types into one application.
The project format is central to its workflow. Edits are stored as non-destructive deltas in SMEDIT project files, then applied when exporting a patched ROM or IPS patch. Room tools include tile painting, fill, erase, sampling, undo and redo, stateful editing, and new-room creation. PLM placement and enemy position or property editing extend the room workflow, while a sprite assembly editor offers animation preview. A pause-screen minimap editor addresses another game-specific asset. The embedded SNES emulator includes controller support and save states, keeping a way to inspect edits within the same desktop tool.
Its narrow game focus is also the main constraint: SMEDIT is for Super Metroid, not a broad multi-game editing environment. ROM compatibility matters too; standard-layout 3 MiB ROMs support editing, while expanded or relocated ROMs are limited to read-only inspection. Public source availability and the free pricing designation make it an option for solo users seeking a focused editor, but users who need to edit expanded or relocated ROMs should look elsewhere. The published feature set suits projects built around room, enemy, sprite, minimap, and IPS work in this specific game.
SMEDIT pros and cons
- Where it wins
- Edits rooms, PLMs, enemy properties, sprites, and the pause-screen minimap
- Stores changes as non-destructive deltas in project files
- Includes IPS patch tools and an embedded emulator with save states
- Where it doesn't
- Focused on Super Metroid rather than general-purpose ROM editing
- Expanded or relocated ROMs are limited to read-only inspection
- ROM editing supports standard-layout 3 MiB ROMs
SMEDIT fact sheet, pricing and score →
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