Groundfall

Groundfall is an educational nuclear blast simulator built on declassified physics models.

Place a detonation on a map and visualize blast zones, thermal radiation, fallout patterns, and estimated human impact. Groundfall is designed to help users understand the real-world consequences of nuclear weapons through clear simulations, historical context, and preparedness information.

WHAT YOU CAN DO

- Simulate nuclear weapon effects on any city or location
- Compare historical and modern weapon yields
- View blast, thermal, radiation, and fallout zones
- Explore real-world conflict scenarios
- Analyze fallout direction using wind data
- Review casualty and damage estimates
- Learn about nuclear physics, arsenals, history, and preparedness
- Save and export simulation results

FREE STARTER MODE

Groundfall is free to download and includes limited access so you can test the core simulator before upgrading.

GROUNDFALL FULL ACCESS

Unlock the complete app with a one-time lifetime license. No subscription.

Full Access includes unlimited simulations, all weapons, conflict scenarios, advanced fallout tools, export features, live nuclear news, preparedness tools, and future premium features.

EDUCATIONAL PURPOSE

Groundfall is not a game and does not promote violence. It is an educational tool for understanding the destructive effects of nuclear weapons and the importance of prevention, preparedness, and informed public awareness.

PRIVACY

Groundfall does not require an account. Simulations are processed on device where possible, and the app is designed to minimize data collection.