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SpannerGames
MarchingBlocks My downloads
Early Access soon · free demo out now

Sculpt one block.
Paint a world.

MarchingBlocks is a 3D tile tool for level design. Sculpt one block, and it cuts every tile a world needs. Paint whole worlds with them, pour water that finds its own way, walk them in a Play test, then send them to Godot, Unity or Unreal with free plugins.

€39.00Free demo on itch.ioOn sale soon

Windows 10 / 11, 64-bit · Version 1.0.0 · Every update and version 1.0 included · Honest limits

Sculpt one block, and it becomes an island — recorded in the real software

How it works

The witness block, sculpted in the Geometry workspace

1. Sculpt one block

You do not model hundreds of tiles. You shape one block, the witness, with Blender's gestures inside the app — or in Blender itself. It holds the 52 tiles a world needs, each one a linked copy: sculpt one, all follow.

An island painted from the tiles of two layers, with a lava volcano and the sea

2. Paint a world

Paint cells, and the right tile appears in each place, turned the right way, joints included. Layers of rock, grass and sand meet without a seam. Dig tunnels, wells, stairs and rooms in one click.

A plateau lake pouring into the sea as a waterfall

3. Pour water, walk it, ship it

Click once: a hollow becomes a lake, a slope a river that falls as a waterfall. Dig a channel and it flows again. Walk, swim and fly through your level, then export it to your engine.

Every feature

Early Access buyers get 1.0

Everyone who owns MarchingBlocks gets every update, and version 1.0, at no extra cost. Version 1.0 is planned to add a World Generator workshop (size, shape, paths, caves, water and biomes, set by sliders, a seed or a rough sketch — no AI) and smooth shading for tiles. The Props and Houses workshops are planned after 1.0, included as well. Roadmap

Free engine plugins

The MarchingBlocks Paint plugins for Godot, Unity and Unreal are free and MIT-licensed. The format is open. The tiles and worlds you make are yours, commercial use included, with no royalty. Plugins

Before you buy

  • Windows only for now, with a Vulkan graphics card.
  • Early Access: complete in features, but young. Few people have used it yet: expect rough edges, and tell us.
  • A tile sculpted in one place comes back everywhere its shape comes back — that is the point of tiles. Variants are there to break the repetition.
  • The art in our videos and screenshots is made by the developer, not by an artist: judge the tool, not the art.

Try it first: the free demo is the whole software, without saving or exporting. FAQ and limits

Made by one developer

MarchingBlocks is made by SpannerGames, a one-person studio in France. Every screenshot and video on this site is captured in the real software.