Seven simulations
Plate Tectonics
Three boundary types (divergent, convergent, transform) evolve to real-world landforms: Mid-Atlantic Ridge, Japan Trench arc, and the San Andreas Fault.
Seismic Waves
P-waves and S-waves radiate from the hypocenter; three stations build up a seismogram in real time.
Epicenter Location
The Omori formula converts a P-S time difference into a hypocentral distance; three circles meet at the epicenter.
Volcanic Eruption
Magma viscosity and gas content drive four styles in succession: Hawaiian, Strombolian, Vulcanian, and Plinian.
Lava Flow
A viscous fluid flows down terrain. Cooled segments turn black behind the glowing front. Lower viscosity gives a longer runout.
Earth Interior
Four concentric layers and the seismic ray paths. The S-wave shadow zone proves the outer core is liquid.
Geomagnetism
Earth's dipole field, the magnetosphere that deflects the solar wind, and the long-term geomagnetic reversal.
Highlights
Four-phase progression
"Initial — forming — developing — final" is always visible at the top. You can see exactly what is happening and where it is headed.
Real-world endpoints
Each final phase shows a real geological feature or canonical observation, anchoring the simulation in textbook reality.
Labeled visuals
Every plate, layer, trench, fault, hypocenter, and field line is labeled in Japanese.
Physics references
Built-in formula sheets: Omori's formula, Green's law, Snell's law, dipole field, and more.
Clean UI
Material Design 3. Speed slider, previous/next phase buttons, light and dark themes.
Free, ad-supported
All features free. A single banner ad. No in-app purchases or subscriptions.
RAKU series
Contact
support@fujibit.com
A bug-report template is available on the support page.