arXiv:2611.13296v1 Announce Type: new Abstract: Integrating three-dimensional cellular automata (3D CA) into extended reality (XR) requires coordinated simulation, volumetric data management, rendering, and interaction under variable hardware constraints. This paper presents a hybrid study combining a critical review of existing approaches with a unified architecture for real-time 3D CA in XR. The proposed five-layer architecture integrates voxel and rule management, parallel computation, interoperability middleware, visualization, and XR interaction. Its key principles include hardware-aware execution, asynchronous simulation-rendering, adaptive fidelity, and cross-engine interoperability. An analytical evaluation framework is defined to assess performance, latency, scalability, memory efficiency, simulation correctness, and interaction quality. The proposed framework provides a foundation for developing portable and interactive 3D CA systems across desktop and mobile XR platforms.