Stella Preview
This expedition unlocks all sections, controls, and checkpoints with Stella or above.
Plate Tectonics
Explore how Earth surface plates move, subduct, form ridges, and gather earthquakes and volcanoes at their boundaries.
1/3
Build the mental map
This official English draft follows the source section “地表は一枚板ではない” and frames it inside Plate Tectonics. Use the 3D model, controls, and checkpoints to connect the visible parts with the underlying system.