Headset-free VirCube XR SPACE is a multi-user to provide safe and highly realistic immersive 3D simulation training for rehabilitation and aging individuals. Users can engage in simulated training using natural body movements or tools while maintaining eye contact and face-to-face communication with caregivers or therapists. The system features full-body motion tracking, body sensing, and 4D functionality, and the performance data can be utilized for artificial intelligence analysis. It comes with a vast library of interactive content, including muscle training, cognitive exercises, instrumental activities of daily living (IADLs), reminiscence therapy, emotional relaxation, behavioral management, end-of-life education, and career planning, among others.