MeltyTool review
A capable free option for batch game-asset extraction, with support varying by title.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
MeltyTool is an open-source Windows desktop utility for viewing, extracting, and converting assets from selected N64, GameCube, Wii, Nintendo DS, Nintendo 3DS, and PC games. It is aimed at users who need to inspect supported game models, extract individual assets, process complete directories, or automate extraction with game-specific scripts. Its supported asset types include 3D models, textures, animations, rigs, maps, audio, MIDI, and Picross puzzles, giving it a wider remit than a model-only extractor.
Its strongest fit is batch-oriented work. The graphical interface can display supported game models, while directory extraction and game-specific scripts support larger collections. The Universal Asset Tool adds command-line conversion for supported model files, with automatic selection of conversion plugins based on input files. Model export is available in GLTF/GLB and FBX, while textures can be handled in DDS. The published format coverage includes a broad list of game-file formats, including CISO, GCM, ISO, NKit ISO, 3DS, CCI, CIA, NDS, GB, Z64, and multiple game-specific formats.
MeltyTool’s free, open-source model makes it accessible for exploratory extraction and repeatable workflows without a paid tier. Its limits are tied to coverage and conversion quality: the tool targets selected games and formats, and support and export accuracy vary by game and asset. Users focused on a supported title, directory-scale extraction, and GLTF/GLB or FBX output should find the feature set relevant. Those needing consistent results across unsupported games, platforms beyond Windows, or uniform export fidelity should choose a tool with broader verified coverage.
MeltyTool pros and cons
- Where it wins
- Extracts individual models, complete directories, or batches via scripts
- Converts supported assets from the command line
- Exports models to GLTF/GLB and FBX on Windows
- Where it doesn't
- Coverage is limited to selected games and supported file formats
- Support and export accuracy vary by game and asset
- Windows is the listed supported platform
MeltyTool fact sheet, pricing and score →
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