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The Cartoon Island example world painted in MarchingBlocks, with its caves, cave entrances, waterfalls and rivers
The Twelve Biomes example world painted in MarchingBlocks, with its caverns, a glass tunnel under the sea, waterfalls and a volcano
The Fire Lands example world painted in MarchingBlocks: a lava sea, basalt organs, sulfur dunes, magma geodes underground
The Space Station example world built in MarchingBlocks, with its corridor, reactor, labs and hydroponics bay

SpannerGames

Worlds you can paint.

SpannerGames is a one-person indie studio in France. We make games and the tools to build them — and we show everything as it is made.

Our gamesFollow the progress

Example world · Cartoon Island

Games

Satyron

Game · In development

Satyron

A demon of fire in the Ruin.

40% · The Ruin, the first world

River Stones

Game · Almost finished

River Stones

The river decides.

85% · Polish, new trailer, online play

Pix

Game · Closed alpha soon

Pix

Closed alpha soon.

65% · Cliffs and terrain, then the closed alpha

WaterDrop

Game · In development

WaterDrop

A drop of water, a whole island.

5% · First playable prototype

Spirit Heart World

Game · In development

Spirit Heart World

A long journey, rebuilt.

35% · Major rework planned

UnderMend

Game · Concept

UnderMend

Coming next.

0% · Not started

The Story of Knil

Game · Prototype

The Story of Knil

The hero nobody asked for.

30% · Death, the real tileset, then the first dungeon

Software

MarchingBlocks

Tool · Out now

MarchingBlocks

Sculpt one block. Paint a world.

100% · Version 1.1.0 — free and open source (GPL-3.0)

MarchingSquares

Tool · Out now

MarchingSquares

Paint one guide. Get a complete 2D tileset of plateaus and cliffs.

80% · Version 1.0.0 — free and open source (CC0); next, a hand-painted example tileset

OneMagic

Tool · Concept

OneMagic

Spells, designed.

5% · Paused

Where everything stands

Updated 2026-11-04. Every project, its stage and what comes next — see the details.