Biosphere Blue · Planet Sim

Start with a young planet and guide it through deep time. Raise continents, flood basins, warm or chill the climate and seed life. Then watch the climate, water and carbon cycles respond. Life climbs from microbes to land plants, animals and thinking species, and a civilization can rise from the Stone Age all the way to Exodus, or collapse. SHAPE THE WORLD • Sculpt terrain: raise, lower and flood • Heat or cool regions, and form or melt ice • Seed grass, forest, jungle and animals • Trigger meteors, volcanoes, hurricanes, tidal waves, earthquakes, fires and more • Terraforming tools: oxygenator, CO₂ and N₂ generators, vaporator, biome factory and ice meteor • One-tap global events: ice age, greenhouse and mass extinction • Every action spends energy. Pick a budget on the main menu, from Easy to Unlimited WATCH IT RESPOND • Rotating 3D globe • Ten map views: elevation, temperature, moisture, rivers, winds, biomes, tectonic plates, vegetation, rainfall and events • Tap any tile to inspect it • A planet report, a civilization panel and a Gaia panel • Time moves from millions of years per step while the planet forms, down to a year per step once a civilization appears MISSIONS AND SANDBOX • 10 missions, including Snowball Earth, the Pleistocene ice age, Earth in the modern day, Daisyworld, and terraforming Mars and Venus • Sandbox scenarios to explore freely • Achievements • Save and load your worlds Ambient music, adjustable speed and a built-in controls and physics guide. No account and no internet connection needed to play. Free with ads. No in-app purchases.