What is Skybox Plus?
Skybox Plus is a dynamic skybox solution for Unity that combines real-time animated haze, procedural clouds and hand-painted multi-layered cubemaps into a single, easy-to-use material.
With two specialized shaders - Clouds (up to 4 cubemap layers) and Landscape (up to 7 cubemap layers) - you can build anything from a minimalist foggy sky to a richly layered panorama with animated clouds, sun, moon and stars.
Fully shader-based - Skybox Plus runs entirely inside the skybox shader. No additional cameras, render textures or MonoBehaviors are required for standard setups.
Key Features
Procedural Sky
- Procedural Haze - animated noise-based fog and cloud effects projected onto the skybox.
- Customizable noise - swap in your own noise texture, or tweak scale, threshold and intensity for different looks.
- Rotation axis and speed - animate the haze along any axis for a subtle, ever-changing sky.
Layered Cubemaps
- Up to 4 cloud layers (Clouds shader) or 7 landscape layers (Landscape shader) that blend on top of the procedural sky.
- Per-layer controls - alpha, horizontal shift, horizontal speed, vertical shift and vertical motion.
- Animated clouds - cloud layers let sunlight shine through and can drift across the sky at runtime.
- Opaque mountains - landscape layers render fully opaque, perfect for distant mountain silhouettes.
Sun, Moon & Stars
- Sun - configurable size, flare and tint that follows the main directional light direction.
- Night time mode - enable a moon with custom texture, procedural stars with density, brightness, color range and blinking.
- Day/night transitions - simply rotate the directional light; the skybox transitions from day to night automatically.
- Exposure and sky tint - global brightness and color controls.
- Horizon fog - configurable horizon fog with custom color and amount.
- VR support - Single Pass Stereo and MultiView via a lightweight helper script.
- 30+ ready-made materials - included presets covering clear skies, cloudy days, haze effects and more.
Compatibility
- Unity 2020.3 LTS or newer.
- Works with Built-in, URP and HDRP render pipelines (skybox materials are pipeline-agnostic).
- Supported on all platforms including mobile, consoles and VR.