The paper introduces eXtended meta-uni-omniVerse (XV) as a comprehensive framework for shared (social) extended reality (XR) across all "verses," including the universe (physical reality), metaverse (virtuality), omniverse, and multiverse. The authors argue that the proliferation of terms like virtual reality, augmented reality, and mixed reality has led to confusion, necessitating an overarching concept to unify and extend these realities. XV is proposed as a taxonomy that includes a third dimension, sociality, to enhance shared, collaborative XR experiences. The paper outlines the state-of-the-art in various realities and verses, highlighting the need for further research into XV technologies. It discusses the potential of XV to provide immersive and meaningful computational experiences, emphasizing the importance of standardization, integration, and accessibility. The authors also explore the integration of AI and blockchain in XV, noting their potential to enhance user interactions, data security, and system functionality. Examples of XV applications include "Unicorn Vision," a system that provides a bird's-eye view for individuals with mobility issues, and the Freehicle, a smart mobility aid that assists individuals with disabilities. The paper also discusses the development of systems that support orientation and mobility (O&M) for the visually impaired and elderly, emphasizing their potential to improve quality of life and social participation. Challenges and future directions include addressing ethical, social, and technological implications of XV, ensuring accessibility for diverse populations, and expanding the range of applications in education, healthcare, and assistive technologies. The authors conclude that XV represents a promising frontier with significant potential for innovation and advancement, emphasizing the need for continued research and development to maximize its benefits while minimizing potential harms.The paper introduces eXtended meta-uni-omniVerse (XV) as a comprehensive framework for shared (social) extended reality (XR) across all "verses," including the universe (physical reality), metaverse (virtuality), omniverse, and multiverse. The authors argue that the proliferation of terms like virtual reality, augmented reality, and mixed reality has led to confusion, necessitating an overarching concept to unify and extend these realities. XV is proposed as a taxonomy that includes a third dimension, sociality, to enhance shared, collaborative XR experiences. The paper outlines the state-of-the-art in various realities and verses, highlighting the need for further research into XV technologies. It discusses the potential of XV to provide immersive and meaningful computational experiences, emphasizing the importance of standardization, integration, and accessibility. The authors also explore the integration of AI and blockchain in XV, noting their potential to enhance user interactions, data security, and system functionality. Examples of XV applications include "Unicorn Vision," a system that provides a bird's-eye view for individuals with mobility issues, and the Freehicle, a smart mobility aid that assists individuals with disabilities. The paper also discusses the development of systems that support orientation and mobility (O&M) for the visually impaired and elderly, emphasizing their potential to improve quality of life and social participation. Challenges and future directions include addressing ethical, social, and technological implications of XV, ensuring accessibility for diverse populations, and expanding the range of applications in education, healthcare, and assistive technologies. The authors conclude that XV represents a promising frontier with significant potential for innovation and advancement, emphasizing the need for continued research and development to maximize its benefits while minimizing potential harms.