Fable: Stylized Nature Toolkit

Stylized grass, wind, clouds and sky for Unity 6 URP. A simple setup with one rig: grass sways and parts around characters, cloud shadows drift, and the sky turns from day to night on one clock.

Features

• Wind, Sky, Clouds and Grass modules on one rig, with a tabbed, searchable inspector.
• GPU grass from compute shaders, with an automatic CPU fallback.
• Spline grass (strips and fills), grass interaction (up to 64 objects at once), ground colour blending, distance fade and quality presets.
• Cloud shadows through the sun's light cookie, matched by the sky's clouds.
• Day/night sky with sun, moon and stars, driving ambient light, fog and post-processing.
• Works with Domain Reload disabled.
• Core Demos sample: six rooms.

Requirements

• Unity 6000.0 or newer, URP 17.0 or newer. Built-in and HDRP are not supported.
• Light Cookies on the URP asset, for cloud shadows. Fable Setup turns them on.

Supported platforms

• Editor: Windows and macOS.
• WebGL tested (WebGPU and WebGL 2). Without compute shaders, grass uses a CPU path about 3x slower.
• Mobile uses the same code paths but is lightly tested.

Fable is a stylized environment rig for Unity 6 and URP. One Fable object runs four modules that share one wind and one clock, so everything in the scene moves together.

Grass: GPU-instanced blades on any mesh, or drawn along a spline as strips and filled areas. Five ready-made looks (Meadow, Lawn, Savanna, Frost, Blossom). Objects push the blades aside and leave a wake, and the grass can blend its colour with the ground beneath.

Wind: one breeze and gust field that the grass, the clouds and your own shaders all follow.

Clouds: drifting cloud shadows cast through the sun, with no geometry and no extra shadow pass. The sky draws the same clouds overhead.

Sky: a stylized gradient sky with sun, moon and stars on a day/night cycle that also drives ambient light, fog and post-processing.

Everything is edited in one tabbed inspector, with search, presets and one-click copies of any preset.

Fable Setup checks your project and adds a working rig to your scene in one click.

The Core Demos sample has one small room per feature, with steps to click through and live controls.

Full C# source included.

Documentation

Online manual: https://alfredwooden.github.io/fable-docs/

Offline copy included in the package (Documentation~/Fable.md).

Support - Discord