Generating Tilesets & Seamless Textures
Make auto-tiling tilesets (top-down 2-terrain, 17-piece and side-view platformer) and seamless repeating textures that don’t show a grid in your game.
Levels are built from two kinds of repeating art: tilesets, where tiles meet each other in different combinations, and textures, one image that repeats in every direction. Raw AI art fails at both, because edges don't line up. Voidless matches the edges for you. Here's how to make each.
Tilesets: Type set to Tileset
In the image generator, set Type to Tileset and choose a Layout:
- Top-down, 2 terrains: a wang autotile sheet where one terrain meets another, such as grass and a path or sand and water. Every tile edge matches every tile it can touch.
- Top-down, 17-piece: a 17-piece sheet with edges, inner and outer corners, for engines and editors that expect that layout.
- Side view, platformer: side-on ground for a platformer, such as grass on dirt or snow on rock.
Describe the terrains in the prompt: "grass and a cobblestone path", "desert sand and shallow water", "snow on dark rock". Pick a Style and Colour Palette as usual. Tilesets always use GPT-Image 2.5 (5 credits), so the Model menu is locked for this type.
Seamless textures
For a single repeating surface (grass, stone, sand, water, wood planks), ask in the dashboard prompt box or in a project chat and include the word seamless or texture: "a seamless mossy cobblestone texture". Voidless paints the texture straight down, flattens its lighting so there's no bright centre, and repaints the seams so copies join without a visible line.
Test the repeat
Before you build a level, check the result at scale:
- Load a tileset into the free Tilemap Editor and paint a small area.
- Tile a texture 3×3 in your engine and look for a mark that repeats in an obvious pattern.
If one feature stands out on every copy, regenerate with a calmer prompt ("even", "low contrast") or make a second variant to mix in.
Free tools for tiles
- Tileset Generator: builds a 4-corner wang autotile sheet or a 17-piece guide sheet from your colours.
- Platformer Tileset Generator: side-on platformer tiles such as grass on dirt.
- Tilemap Editor: paint a level and export a Tiled-style JSON map.
