Full Control Over Rendering. Built for Spatial Computing.
Untold Engine is an open-source Swift and Metal engine for building games, XR experiences, and spatial visualization applications across Apple platforms.
Go beyond high-level rendering abstractions with direct control over shaders, rendering techniques, and engine architecture
Build Beyond the Screen.
From immersive games to real-world visualization, Untold Engine provides the foundation for creating interactive experiences.
Build spatial applications for Apple Vision Pro, explore architectural environments, develop interactive simulations, or bring virtual experiences into the physical world.
A Rendering Foundation You Can Actually Control.
Untold Engine combines high-performance Metal rendering with the systems needed to build sophisticated interactive applications.
Modern Rendering: Create visually rich environments with physically based materials, dynamic lighting, shadows, image-based lighting, and post-processing. Go beyond predefined rendering workflows with direct access to shaders and the rendering pipeline.
Animation & Physics: Build responsive, interactive environments with skeletal animation, character deformation, physics simulation, and collision detection.
Spatial Computing: Create immersive applications for Apple Vision Pro. Blend virtual content with physical environments and build interactions that extend beyond traditional screens.
Extensible by Design: Develop custom components, integrate specialized systems, and extend engine functionality to meet your application's requirements.
Native Apple Development: Built with Swift and Metal, with support for macOS, iOS, and visionOS. Work within Apple's native development ecosystem while maintaining control over your rendering technology.
Built for Reliability: Automated tests, rendering diagnostics, and disciplined engineering practices help maintain a dependable foundation as the engine evolves.
When You Need More Than a High-Level Framework.
RealityKit makes it easier to get started with spatial computing.
Untold Engine is designed for developers who need deeper control.
Built with Swift and Metal, it gives you access to the rendering pipeline, shaders, and engine architecture without relying on a closed rendering system.
Open source. Native to Apple platforms. Built to be extended.
Custom Rendering & Spatial Computing Solutions
Building an application that needs more than a standard rendering framework?
We work with companies and development teams to build specialized rendering capabilities, optimize performance, and extend Untold Engine for demanding real-time applications.
Whether you're developing an industrial visualization tool, a Vision Pro experience, or a custom simulation, we can help solve the engineering challenges behind your product.
Start Building with Untold Engine.
Whether you prefer a visual editor or working directly with code, Untold Engine gives you the flexibility to build your way.
Create with Untold Editor
Build scenes, configure materials, manage assets, and bring your ideas to life with a visual development environment.
Build Directly with the Engine
Prefer working with code? Clone the open-source engine, explore its architecture, and build your application using Swift and Metal.