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Blockhammer

blockhammer.app

Free plan WindowsmacOSLinux
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Spec score 8.1 #6 of 26 in Voxel Editors

What it is

Blockhammer is a free voxel editor for building scenes from cubic blocks, available for macOS, Windows, and Linux. Its modeling tools include layers, named objects, precise position and size controls, reversible effects, and undo. Painting works on block faces at sixteen times the blocks’ resolution and supports text, images, glass, metal, and glowing paint. Blockhammer imports and exports MagicaVoxel .vox files, and exports .glb, .obj, Minecraft .schem, and image or animation formats. Export destinations named by the maker include Unity, Unreal, Godot, Blender, Minecraft, and Teardown. The maker reports rendering a 113-million-block scene and testing scenes beyond one billion blocks. The editor autosaves every minute and can recover work after a crash. Scenes and files remain on the user's machine, and no account is required. Crash reports may include errors, recent activity, and graphics hardware details; reporting can be disabled. Optional AI texture generation is off by default and uses the image API configured with the user's own key. The software is in active development, so features may change.

Spec sheet

Product
Blockhammer is a free voxel editor for building scenes from cubic blocks.Read 30 Sep 2026 · docs.blockhammer.app
Integrations
The maker lists Unity, Unreal, Godot, Blender, Minecraft, and Teardown as destinations for exported work.Read 30 Sep 2026 · blockhammer.app
Support
Users can send feedback from the editor, and the maker lists [email protected] for questions or removal requests.Read 30 Sep 2026 · blockhammer.app
Autosave and recovery
The editor autosaves every minute and can restore work after a crash.Read 30 Sep 2026 · blockhammer.app
Data handling
The maker says scenes and files stay on the user's machine and the app has no account requirement.Read 30 Sep 2026 · blockhammer.app
Diagnostics
Crash reports may include the error, recent activity, and graphics hardware details; users can disable crash reporting in settings.Read 30 Sep 2026 · blockhammer.app
Early access
The maker describes the software as under active development, with features that may be reworked or replaced as it changes.Read 30 Sep 2026 · blockhammer.app
Formats
It imports and exports MagicaVoxel .vox files and exports .glb, .obj, Minecraft .schem, and image or animation formats.Read 30 Sep 2026 · blockhammer.app
Large scenes
The maker says Blockhammer has rendered a 113-million-block scene and has tested scenes beyond one billion blocks.Read 30 Sep 2026 · blockhammer.app
Modeling
It supports layers, named objects, exact position and size controls, reversible effects, and undo.Read 30 Sep 2026 · blockhammer.app
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.Read 30 Sep 2026 · blockhammer.app
Painting
Users can paint block faces at sixteen times the blocks’ resolution, including text, images, glass, metal, and glowing paint.Read 30 Sep 2026 · blockhammer.app
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.Read 30 Sep 2026 · blockhammer.app

Plans and prices

Free Free Free voxel editor; macOS, Windows, and Linux downloads; early access Read 30 Sep 2026 · blockhammer.app

Every Blockhammer plan and price →

Strong points and limits

Strong points

  • Free plan costs nothing.
  • Paints faces at sixteen times block resolution.
  • Imports and exports MagicaVoxel.vox files.
  • Autosaves every minute and can restore crashes.
  • No account is required; scenes stay local.

Limits

  • Animation tools are not included.
  • The software is under active development.
  • macOS 11 or later is required.
  • Linux requires x86_64 and glibc from Ubuntu 22.04 or newer.

Who it suits

Blockhammer suits people who want to build and paint voxel scenes, then export them to supported formats or listed destinations. It is available for desktop users on macOS, Windows, and Linux.

Verdict

Blockhammer combines detailed voxel modeling and painting with several export formats and integrations. Note its early-access status, desktop system requirements, and lack of animation tools before choosing it.

Where Specifiction places it

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