Okeanos, a new free app from Quadrivium, is a spinnable, zoomable 3D globe showing mountains and ocean depths where you control the ocean level!

Check out the extent of Doggerland when the Ice Age drained the North Sea, or figure out how much the sea level would have to rise to sail into Samarkand! Reveal ancient land bridges and speculate about future coastlines.

Available now for free download from the App Store.