Gaitkit Open the lab
River Tile, A 4 x 4 m terrain tile with a river cut into it: straight (N to S), bend (S to E), fork (S splitting to N and E) or end (a spring that feeds the river out to S), with sloped banks, river rocks, reeds and optional stepping stones. The channel meets each open edge centred with one fixed cross-section (water about 1.5 m wide, 0.12 m below the 0.4 m ground line), so river pieces, the waterfall and lava-flow tiles join seamlessly; in the volcanic biome the river is glowing lava.
Nature · Still

River Tile

A 4 x 4 m terrain tile with a river cut into it: straight (N to S), bend (S to E), fork (S splitting to N and E) or end (a spring that feeds the river out to S), with sloped banks, river rocks, reeds and optional stepping stones. The channel meets each open edge centred with one fixed cross-section (water about 1.5 m wide, 0.12 m below the 0.4 m ground line), so river pieces, the waterfall and lava-flow tiles join seamlessly; in the volcanic biome the river is glowing lava.

Size
4.0 × 1.2 × 4.0 m
Triangles
1,760
Open in the lab Ready for any engine. The download carries the knobs you set here.

Tune it

5 knobs: Piece, Biome, Stepping stones, Decor, Seed.

Specs

Size
4.0 × 1.2 × 4.0 m
width × height × depth
Triangles
1,760
of 6,000
Draw calls
1
one vertex-colour material
Knobs
5
3 presets
Night lights
2
lava, glow

Passed the validator: real scale, rests on y = 0, front faces +Z, deterministic.

Use it

Code for the specimen as it is set up above; it follows your knobs.

JavaScript
import { createAsset } from 'https://gaitkit.com/cdn/river-tile.mjs';

const riverTile = createAsset();
scene.add(riverTile);                      // rests on y = 0, front faces +Z

More in the docs; agents can fetch all of this through MCP.

Knobs

KnobTypeValuesDefaultWhat it does
piecechoicestraight bend fork endbendstraight (river from N edge to S edge), bend (from S edge round to E edge), fork (S edge splitting to N and E), end (a spring pool in the middle feeding a river out through S). Rotate in 90 degree steps.
biomechoicegrass desert snow rock volcanic aliengrassShared by every Terrain piece: grass (blue water, green banks), desert (teal oasis water, sandy banks), snow (icy water with floes), rock (grey stone banks), volcanic (the river becomes glowing lava), alien (glowing teal liquid, violet banks).
stonestoggleon / offtrueA line of flat stones across the river (or cooled basalt blocks on lava).
decorrange0 to 1, step 0.10.6Reeds, river rocks and ground scatter on the banks. 0 gives clean banks.
seedrange1 to 50, step 13Moves the rocks, reeds and decor. The channel and edges never change.

Presets: lava channel {"biome":"volcanic","piece":"straight","stones":false} · oasis spring {"biome":"desert","piece":"end"} · frozen fork {"biome":"snow","piece":"fork","seed":8}

Files

FileWhat
river-tile.glbGLB, default look · 194 KB
river-tile.mjsES module, every knob live
river-tile.objOBJ, static, no colour
river-tile-params.jsonknob schema, presets, night zones

Licence

Use it in games, apps, renders and client work, commercially and without credit. Do not resell it as an asset or train a 3D generator on it. The full licence.