Blobsmith — Godot 4 autotile maker

Stop wiring terrain bits by hand.

Blobsmith turns 6 hand-drawn base tiles into a complete 47-tile blob autotile set — with a Godot 4 TileSet (.tres) that arrives already wired: terrain set, peering bits on all 47 tiles, optional collision shapes. Drop two files into your project, add a TileMapLayer, and paint.

Why this exists: the classic tileset tools only export Godot 3.x tilesets — in Godot 4 you're left clicking peering bits by hand, tile by tile, for every terrain. Blobsmith does that part in one click, correctly, every time.

What you get

• 🎨 Built-in pixel editor — or import any RPG Maker A2-style 2×3 base block PNG
• 🕹️ Live autotile playground — paint and preview your terrain before exporting
• 🤖 Godot 4 export: .tres + .png with terrains, peering bits and optional full-square collisions (physics layer 0). Relative texture path — drop both files into any folder of your project
• 🗺️ Tiled export: .tsx with a complete wang set
• 🖼️ PNG tilesheet export (47-blob layout, 8 columns)
• ⬜ 16-tile "sides only" mode (Godot "Match Sides" terrains)
• 📏 Tile sizes 8–64 px · 4 sample themes to learn the format
• 🔌 Runs 100% offline — a single HTML file; your art never leaves your machine
• ✅ Verified against Godot 4.7 stable by an automated suite that runs the real engine and asserts the painted terrain

Prefer the DIY route? That is fine by us

Export the PNG sheet from Blobsmith Lite (free, unlimited, no watermark) and wire it yourself with our free MIT Godot addon — it is on the official Asset Library. We built both, and they stay free.

What the paid version adds: the whole thing in one click (no second tool, no layout rules to respect), Tiled .tsx export, the offline single-file app with free updates, a commercial license (unlimited commercial use, no attribution, no royalties), and direct support. Paid-only features coming next: multi-terrain sheets, tile variants with probability, traced collision shapes, Unity RuleTile export.

Free, and you do not need this tool for it: 8 already-wired Godot 4 tilesets

When your own sheet paints the wrong tile, the quickest way to tell your bug apart from Godot's behaviour is a sheet you already know is right. There was no such sheet lying around, so we made one and gave it away: the 47-blob starter pack — 154 KB, 18 files, MIT, no email and no account — or browse it first.

Four terrains (grass, stone, sand, water) at 16 px and 32 px: each row is a .png sheet plus a .tres that already carries terrain set 0 in Match Corners and Sides, peering bits on all 47 tiles and a full-square collision polygon. Copy both files of one row into any folder of your project, add a TileMapLayer, open TileMap → Terrains → Connect, and paint. No plugin needed — not this one, not any. The art is placeholder art on purpose; the wiring is the part that took the work.

Also free, also without this tool: convert a deprecated TileMap to TileMapLayer

Godot deprecated TileMap in 4.3. The editor converts one scene at a time, by hand, and only scenes it can open. Paste a .tscn into this page and get the converted scene back — nothing to install, no account, no email — or run the same MIT file over an entire project from the terminal.

The two shapes are not the same bytes, so it re-encodes layer_N/tile_data into each node's tile_map_data instead of copying. And it refuses what it cannot do safely — a node carrying a script, an unknown layer_N/ key, two layers sharing a name — because a converter that half-understands a scene and rewrites it anyway corrupts a project quietly and you find out three weeks later. 640 engine assertions across Godot 4.2, 4.3, 4.4 and 4.7, including a scene written by 4.2 and read back by 4.7. Run over Godot's own demo projects at branch 4.2: 298 scenes scanned, 17 TileMap nodes, 14 converted, 3 refused with the reason named. The full write-up shows the byte layout and every refusal rule.

Free, and separate from this tool: the Blobsmith Autotile Wirer v1.1.0 editor plugin (MIT)

Blobsmith draws the sheet. The Blobsmith Autotile Wirer v1.1.0 plugin wires one: point it at a flat 47-blob (or 16-tile) autotile PNG you already have and it writes the TileSet — terrain set, peering bits on every tile, optional collision — in one click or one GDScript call. You do not need this tool for it, and it costs nothing.

Download it free from the Blobsmith Lite page or from GitHub release v1.1.0; source at https://github.com/leobaray/blobsmith-autotile-wirer. 16 KB, MIT, no dependencies — and the published zip is unzipped into an empty project and loaded by a real Godot 4.3 and 4.7 before it ships.

Also free: 14 tilesets where one terrain meets another

The starter pack above paints one terrain against empty. The question it cannot answer is the next one — grass meeting sand, with no gap and no seam — which in Godot 4 is two terrains in one terrain set, every peering bit naming the other terrain. The transition pack is that shape, ready to paint: 402 KB, MIT, no email and no account (browse it first).

Seven pairs at 16 px and 32 px: grass over sand, sand over water (shorelines), stone over grass (paths), water over grass (ponds), grass over stone (overgrown floors), dirt over grass (roads) and grass over dirt (tilled fields). Each .tres carries 48 tiles, all 8 peering bits per tile and a full-square collision polygon. We unpack the zip into an empty project and repaint every sheet in Godot 4.3, 4.4 and 4.7 on each build: 112 checks per engine, every shared side and corner read back from the engine's own tile data.

Try before you buy

Blobsmith Lite runs free in your browser — full editor + playground + PNG export. The full version adds the Godot 4 and Tiled engine exports.

Quick start (Godot 4)

1. Draw your base block (or import one) → click Godot 4 pack
2. Drop blobsmith_tileset.png + .tres into your project
3. Add a TileMapLayer → set its TileSet → TileMap panel → Terrains → paint with Connect mode. Done.

Roadmap (updates are free)

• ✅ Wire-mode — shipped as a free MIT Godot addon, approved on the official Godot Asset Library (“Blobsmith Autotile Wirer”)
• Unity RuleTile export
• Multiple terrains per sheet · alternative tiles with probability

Your pixels stay yours: Blobsmith ships no AI-generated art — everything you export is derived 100% from your own tiles. Questions or bugs → comments below; they get fixed.

Made by Blobsmith Studio. Free, in the browser, nothing to install: drop a tileset PNG and get the wired .tres back, merge two .tres TileSets into one, or take sixteen already-wired blob TileSets (CC0).