Video2Game is a technology that can transform a single video into a high-quality virtual environment with real-time interactivity, realism, and browser compatibility. It achieves high-quality surface geometry by constructing a large-scale NeRF model, which is then converted into a grid representation with corresponding rigid body dynamics to support interaction. Using UV-mapped neural textures ensures both richness of expression and compatibility with game engines. The final result is a virtual environment where virtual characters can interact, respond to user control, and provide high-resolution rendering from new camera perspectives in real time.