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Removes the ice sheets of Antarctica and Greenland and shows the rock beneath. On its own this would raise the sea about 70 m.
Pick one or more volcanoes by clicking them on the globe or searching their name (try “Vesuvius”); only those will erupt.
The biggest eruptions bury whole regions in ash and cool the planet for years.
Big quakes break a long stretch of fault, so the damage runs along it. If part of it lies under deep sea, a tsunami crosses the ocean at jet-plane speed. Aftershocks, fires and woken volcanoes follow, and the later deaths from lost homes, hospitals and food add up in the counter.
A huge eruption on the Sun hits Earth’s magnetic field: auroras far from the poles, and power grids fail.
Flooding follows the terrain and ignores dikes and sea walls. Elevation: Mapzen Terrain Tiles (SRTM, ETOPO1). Volcanoes: NOAA NCEI. Plates: Bird (2003). Places: Natural Earth. Population: GHSL 2025 (European Commission JRC). Weapon effects after Glasstone & Dolan, casualty rates after the US Office of Technology Assessment (1979). Earthquake losses shaped like USGS PAGER, fault lengths after Wells & Coppersmith (1994), tuned to Haiti 2010, Türkiye 2023 and Tōhoku 2011; later deaths from collapse and lost food trade are a rough model; tsunami travel times from ocean depth; impacts after Collins et al. (2005); famine after Xia et al. (2022). All numbers are rough estimates.
How each simulator works: Asteroid impacts · Nuclear weapons · Earthquakes · Tsunamis · Sea level rise · Volcanoes · Hurricanes · Pandemics · Solar storms · Ice ages