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Blockhammer
What it is
Blockhammer is a free voxel editor for creating scenes from cubic blocks, available for macOS, Windows and Linux. Its modeling tools include layers, named objects, exact position and size controls, reversible effects and undo. For surface detail, users can paint block faces at sixteen times the blocks’ resolution, including text, images, glass, metal and glowing paint. Blockhammer imports and exports MagicaVoxel .vox files, and exports .glb, .obj, Minecraft .schem, image and animation formats. The maker names Unity, Unreal, Godot, Blender, Minecraft and Teardown as destinations for exported work. The editor autosaves every minute and can restore work after a crash. Scenes and files stay on the user's machine, and no account is required. Crash reports may contain the error, recent activity and graphics hardware details; reporting can be disabled in settings. Optional AI texture generation is off by default and sends prompts to the image API configured with the user's own key. The software is under active development, so features may change. Requirements are macOS 11 or later, Windows 10 or later on x86_64, or x86_64 Linux with glibc from Ubuntu 22.04 or newer.
For and against
For
- Free editor for macOS, Windows and Linux.
- Supports layers, named objects, reversible effects and undo.
- Paint block faces at sixteen times block resolution.
- Autosaves every minute and can restore work after a crash.
- No account required; scene files stay on the user's machine.
Against
- Features may be reworked or replaced during active development.
- AI texture generation sends prompts to a configured image API.
- Crash reports may include activity and graphics hardware details.
The verdict
Blockhammer combines voxel modeling, detailed face painting and multiple export formats in a free editor. Its local file handling and recovery features are useful, though the maker says the software is still changing.
Who it suits
Blockhammer suits people building and detailing voxel scenes on macOS, Windows or Linux. Its export formats and named destinations may also suit creators moving work into game engines or other listed tools.
Plans and prices
Free
Free voxel editor; macOS, Windows, and Linux downloads; early access
Read 30 Sep 2026 · blockhammer.app
On the record
- Autosave and recovery
- The editor autosaves every minute and can restore work after a crash.blockhammer.app · read 30 Sep 2026
- Data handling
- The maker says scenes and files stay on the user's machine and the app has no account requirement.blockhammer.app · read 30 Sep 2026
- Diagnostics
- Crash reports may include the error, recent activity, and graphics hardware details; users can disable crash reporting in settings.blockhammer.app · read 30 Sep 2026
- Early access
- The maker describes the software as under active development, with features that may be reworked or replaced as it changes.blockhammer.app · read 30 Sep 2026
- Formats
- It imports and exports MagicaVoxel .vox files and exports .glb, .obj, Minecraft .schem, and image or animation formats.blockhammer.app · read 30 Sep 2026
- Integrations
- The maker lists Unity, Unreal, Godot, Blender, Minecraft, and Teardown as destinations for exported work.blockhammer.app · read 30 Sep 2026
- Large scenes
- The maker says Blockhammer has rendered a 113-million-block scene and has tested scenes beyond one billion blocks.blockhammer.app · read 30 Sep 2026
- Modeling
- It supports layers, named objects, exact position and size controls, reversible effects, and undo.blockhammer.app · read 30 Sep 2026
- Optional AI feature
- Optional AI texture generation is off by default and sends the typed prompt to the image API configured with the user's own key.blockhammer.app · read 30 Sep 2026
- Painting
- Users can paint block faces at sixteen times the blocks’ resolution, including text, images, glass, metal, and glowing paint.blockhammer.app · read 30 Sep 2026
- Platform requirements
- The downloads page specifies macOS 11 or later, x86_64 Linux with glibc from Ubuntu 22.04 or newer, and Windows 10 or later on x86_64.blockhammer.app · read 30 Sep 2026
- Product
- Blockhammer is a free voxel editor for building scenes from cubic blocks.docs.blockhammer.app · read 30 Sep 2026
- Support
- Users can send feedback from the editor, and the maker lists [email protected] for questions or removal requests.blockhammer.app · read 30 Sep 2026