II Monument at the opening: a hexagonal island sitting in darkness, only a handful of tiles turned up in green and sand at its edges, the rest unlit, ringed by pale teal water.
Opening. Almost the whole board is face down.
III Monument in midgame: much of the board turned up into forest, grassland and sand, with territory outlined in red and gold where two peoples have started to meet.
Contact. Every tile you take is one the others can't have.
IV Monument late in a game: the island almost entirely revealed in forest, grass, sand and stone, a pale monument standing near the centre, only a few dark tiles left at the margins.
Late. A monument stands where the dark was.
V Monument's full screen: the board at round twelve, a bar across the top counting Mind, Culture, Tools and Food, and the three peoples — the River People, the Ash Makers, the Long Walkers — scored in the top right.
The screen. Four kinds of knowledge, three peoples, one turn at a time.
VI
The studio

Kairo makes games you can open in ten seconds and are still thinking about an hour later.

We started because we wanted to play something slower in a browser tab. Games that are quiet, that give you time, and that are hard in the way a good problem is hard.

One game at a time, finished properly, free to play.

VII
The name 回廊

Kairō is the covered walk that runs the four sides of a courtyard — a path whose whole job is to give shape to an empty middle. We took it for its shorter reading: the open path.

VIII
II — reservedThe corridor carries on past the end of this site.