This paper proposes a taxonomy for the Metaverse, classifying its components (hardware, software, content) and approaches (user interaction, implementation, application). It then analyzes three case studies (Ready Player One, Roblox, and Facebook Research) based on this taxonomy to illustrate how these elements are used in practice and discuss future challenges and limitations.

The authors acknowledge funding from the Korean Government (MSIT), which might influence the focus and direction of the research. Additionally, the case studies focus on commercially successful platforms like Roblox and Facebook, potentially presenting a biased view of the Metaverse landscape.

This paper provides a comprehensive overview of Metaverse technologies and applications, but lacks original research and sufficient discussion on social and ethical implications. The funding source and focus on commercially successful platforms also raise potential conflict of interest concerns.