PNTD Free Stylized Materials and Substances is a highly-customizable set of materials and substances designed for hand-painted / stylized environments. Every substance has dozens of customization options, with plenty of preset files to offer great starting points. This package is part of a larger collection, and purchasing the entire set can save you over 25%.
Using Substances in Unity requires the Substance3D for Unity asset package. Every Substance material included can be customized in-editor, and at runtime, and dynamically render from 512x512 to 4096x4096. Alternatively, the included Substance presets can be used as pre-baked 2K PBR textures with maps for BaseColor, Normal, Height, Metallic, Roughness, and Ambient Occlusion. Supports built-in and URP workflows. External tools like Substance Player can also be used to customize and batch-export the Substances into textures. A consts file is included for runtime use-cases, providing automatic parameter mapping and in-depth documentation.
