ThreeDee

ThreeDee is a United States software development company focused on procedural 3D modeling and large-scale environment generation. Its tools address the architectural modeling work involved in building digital cities, with applications across games, architectural visualization, virtual worlds and digital media. The company develops workflows intended to help small development teams produce varied environments from reusable procedural instructions.

Its web-based procedural modeler generates geometry from sketches and human-readable construction plans. Rather than assembling environments solely from static prefabricated assets, users define instructions that describe how structures should be constructed. Parameters and outlines can then be changed to create visually distinct models while retaining a consistent architectural style.

Adaptive architectural modeling

The platform's proprietary Responsive Geometry technology allows architectural components to adapt when a building's shape or dimensions change. Windows, doors, facades, trims and roofs conform to the revised structure, reducing the manual adjustments associated with reshaping architectural assets. The ANOTHER control generates randomized variations from an existing procedural model, supporting the creation of related buildings without individually modeling every version.

ThreeDee also introduced Maizer, alternatively called Mizer, as a browser-based scene customizer. It lets creators adjust environment parameters without requiring conventional 3D modeling experience, extending the procedural system beyond the users who author its underlying construction instructions.

Production workflows

The software supports batch rendering and level-of-detail export, including FBX assets for use in Unity and Unreal Engine. Its broader offering includes custom procedural architectural asset generation and pipeline tools for games, visual effects and real estate visualization. These capabilities connect procedural asset creation with downstream real-time production workflows.

The development group's more recent work has extended into procedural game development tooling under plyground.ai. As of November 2026, the original marketing website was returning an error and the associated marketplace domain was parked, while the software manual remained accessible and development repositories continued to be maintained.