VirCube XR SPACE is a multi-user, headset-free immersive XR system specifically designed for elderly, rehabilitation clients, individuals with dementia or mild cognitive impairment (MCI), and healthy users. Within a safe, realistic virtual environment, users engage in simulated training exercises using body movements or interactive tools while comfortably wearing lightweight 3D glasses. Crucially, users maintain natural eye contact and interaction with caregivers or therapists throughout training sessions. Equipped with comprehensive motion tracking and sensory interaction features, the system provides real-time analysis of user performance data. Training modules include motor skills enhancement, cognitive exercises, social skills practice, reminiscence therapy, mindfulness meditation, sensory stimulation, and behavioral therapy, effectively addressing diverse rehabilitation goals and healthcare needs.