Uploaded April 2019 | Updated September 2026, 1 week ago

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Normally when you pick cells closer to cell A than to cell B, you get a half-space. But if you are in a highly symmetric closed hyperbolic manifold, the result looks much more interesting.

This manifold is constructed of 260 right-angled dodecahedra (using HyperRogue's "field quotient" method). Two dodecahedra A and B in distance 5 are chosen, and walls are put on the dodecahedra which are closer to B than to A. (Each dodecahedron is in distance 1 to 12 adjacent dodecahedra.)

The earlier version: youtube.com/watch?v=c5XSugCQHuo

This version improves the sight range (7 absolute units during the whole video) and stabilizes the camera (we move along a geodesic).

HyperRogue: roguetemple.com/z/hyper