Procedural Alleys is an add-on built on a geometry nodes framework that allows users to generate customizable urban environments. The tool provides three primary setup types: Front Alley for standard street scenes, Back Alley for narrow brick-lined paths, and Curve Alley for path-based curve shaping. Users can adjust parameters such as alley height, width, and the concentration of wall details to fit specific scene requirements.

The generator includes built-in environment assets to populate the scenes automatically. This includes structural elements like back stairs, pipelines, hanging wires, and dumpsters, as well as 18 specific urban signs and four storefronts. Image textures used across the assets are optimized in size to balance visual fidelity with memory constraints during rendering.