Cosmic StarBox Generator

Bring your space environments to life with the Cosmic StarBox Generator - a powerful procedural skybox editor for Unity. 

This tool allows you to generate high-quality, HDR cubemap textures featuring realistic nebulae and star layers. Whether you're creating a sci-fi game, space simulation, or cosmic adventure, this asset provides endless customization with multi-layered noise patterns and adjustable star effects.

With support for Built-in, URP, and HDRP, the generator automatically updates the skybox material for the current render pipeline.

 You can fine-tune nebula density, color gradients, contrast, and blending modes, while the star system lets you adjust size, count, halos, and even star rays for a truly immersive celestial experience.

The editor includes 12 ready-to-use JSON presets, helping you quickly generate stunning space backgrounds. Plus, the detailed documentation ensures you can get started immediately, whether you need quick previews (256x256 resolution) or high-quality production skyboxes (up to 4096x4096 resolution, 0.75 Gb texture size).