This study uses “Metaverse Seoul” as a case and focuses on Seoul residents. It explores the key factors influencing user immersion in South Korea's metaverse-based government service platforms. The study is based on immersion theory and expectation-confirmation theory. It constructs a theoretical model of “virtual-physical interaction” to show the feedback loop between virtual participation, emotional response, and real-world policy. The findings show that social presence has the greatest impact on user immersion in South Korea's metaverse government services. This is followed by perceived procedural justice, civic task gamification, and AI-driven civic interaction. Structural equation modeling analysis also shows that civic task gamification, accessibility and inclusivity, and virtual-physical policy linkage influence user immersion indirectly through expectation confirmation.