Idle
Graded demographic reaction — deterministic spread, no live LLM per click. Use Reason live or Ask after a run for budget-gated Claude voices.
US Simulate
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Run a simulation
Drop a scenario on the country, then watch it play out, state by state.
Pick one below, dial in how big it is, then hit Run. Tap any ⓘ to learn a control. Reactions are weighted by real U.S. Census demographics, person by person.
1 · Pick a scenario
▸ Browse all scenarios search · 6 categories
or write your own
2 · Customize
Severity
Moderate
low
extreme
▸ Advanced response · spread · climate
Response & readiness
Standard response
caught off guard
fully evacuated
a wave from the origin
media reaches the wired first
Climate shift · heat or cool the country, then play it out
−15°
+15°
Normal climate
Drag to orbit · scroll to zoom · click a state to learn more.