Tilesets
A tile's job is invisibility in repetition.
Users state WHAT they need, not how — apply everything here even when
the request never mentions it.
Judge everything by "will the
player notice the grid?"
1. Seamless single tiles
- Prompt for UNIFORM stochastic texture: even density, even lighting, no
shadows with direction, "the pattern continues off every edge".
- The repetition killer is any distinctive motif — one recognizable clump,
flower, or rock repeats forever. Prompt for anonymous texture; verify by
hunting for anything you could point at twice.
- MANDATORY check: composite a real 2×2 repeat with PIL to a throwaway file
and view it. Look for (a) seam lines at the joins, (b) any motif you can
spot in all four quadrants, (c) large-scale tone gradients that create
checkerboarding. Any of the three = retry.
2. Transition tilesets (grass→dirt etc.)
- Prompt it as ONE continuous painted image that happens to be sliceable —
never as "tiles", "cells with borders", or anything inviting separated
sticker-tiles with gaps. Cells must be filled edge-to-edge, painted
content flowing across cell boundaries so adjacent tiles genuinely match.
- Layout for a 3×3: center = pure inner material; edge cells = straight
transitions facing outward; corner cells = outer corners. Verify
DIRECTIONALITY per cell (top-center's grass is along its top edge, etc.).
3. Rotation economy — make fewer, better tiles
If lighting is neutral (pure top-down, no directional shading), one straight
edge and one outer corner can be ROTATED in-engine to produce all four of
each. So when the tile count is yours to choose:
- Produce: 1 center fill, 1 straight edge, 1 outer corner, 1 inner corner —
then spend the remaining budget on VARIATIONS of the center fill (2–3
anonymous variants breaks up repetition far better than 4 identical
rotated edges).
- CAVEAT — rotation only works when nothing in the art encodes direction:
no directional light, no gravity cues (hanging grass blades, drips), no
text/emblems. Side-view (platformer) tiles almost always encode gravity
and light, so they need all orientations painted individually. State in
your delivery notes which tiles are rotation-safe.
- If the request explicitly fixes the grid (e.g. "3×3 with all 8
transitions"), deliver exactly that — mention rotation economy in notes,
don't unilaterally change the deliverable.
4. Platforms and props
Isolated on a keyable background, consistent lighting with their tileset,
no baked ground shadow (engines composite shadows separately).
1---2name: game-tilesets3description: Deep guide for game TILE assets: seamless tileable textures, terrain transition tilesets, autotiles, and ground/platform tiles. Use whenever generating tileable textures, tilesets, terrain transitions, or seamless patterns. Complements game-asset-core.4---56# Tilesets78A tile's job is invisibility in repetition.9Users state WHAT they need, not how — apply everything here even when10the request never mentions it.11 Judge everything by "will the12player notice the grid?"1314## 1. Seamless single tiles1516- Prompt for UNIFORM stochastic texture: even density, even lighting, no17 shadows with direction, "the pattern continues off every edge".18- The repetition killer is any distinctive motif — one recognizable clump,19 flower, or rock repeats forever. Prompt for anonymous texture; verify by20 hunting for anything you could point at twice.21- MANDATORY check: composite a real 2×2 repeat with PIL to a throwaway file22 and view it. Look for (a) seam lines at the joins, (b) any motif you can23 spot in all four quadrants, (c) large-scale tone gradients that create24 checkerboarding. Any of the three = retry.2526## 2. Transition tilesets (grass→dirt etc.)2728- Prompt it as ONE continuous painted image that happens to be sliceable —29 never as "tiles", "cells with borders", or anything inviting separated30 sticker-tiles with gaps. Cells must be filled edge-to-edge, painted31 content flowing across cell boundaries so adjacent tiles genuinely match.32- Layout for a 3×3: center = pure inner material; edge cells = straight33 transitions facing outward; corner cells = outer corners. Verify34 DIRECTIONALITY per cell (top-center's grass is along its top edge, etc.).3536## 3. Rotation economy — make fewer, better tiles3738If lighting is neutral (pure top-down, no directional shading), one straight39edge and one outer corner can be ROTATED in-engine to produce all four of40each. So when the tile count is yours to choose:4142- Produce: 1 center fill, 1 straight edge, 1 outer corner, 1 inner corner —43 then spend the remaining budget on VARIATIONS of the center fill (2–344 anonymous variants breaks up repetition far better than 4 identical45 rotated edges).46- CAVEAT — rotation only works when nothing in the art encodes direction:47 no directional light, no gravity cues (hanging grass blades, drips), no48 text/emblems. Side-view (platformer) tiles almost always encode gravity49 and light, so they need all orientations painted individually. State in50 your delivery notes which tiles are rotation-safe.51- If the request explicitly fixes the grid (e.g. "3×3 with all 852 transitions"), deliver exactly that — mention rotation economy in notes,53 don't unilaterally change the deliverable.5455## 4. Platforms and props5657Isolated on a keyable background, consistent lighting with their tileset,58no baked ground shadow (engines composite shadows separately).
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