Look closely at any bare granite slab. Every crack used to be a hard, near-black line of one width. A crack now shades softly into the rock: the inside is the rock’s own color in shadow, one edge catches the light and the other falls into a shallow shade. Thin cracks swell and pinch along their length, and about half of them are only color seams, healed or hairline, as on real exfoliated granite.

In a new world the joints themselves changed. They bend together in shared arcs over 5 to 30 m, like sheet joints over a dome, instead of running as near-straight ruled lines. The blocks between them are 3 to 6 m across, where they had been a dense grid of 1 to 2 m, and the cut slots in the ground follow the same curves.

The bigger blocks were checked on a map of the cracks. They had not been filmed in the game when they landed.