A campfire is a small thing to build and a hard thing to get right. By late on September 27 the game’s fire already burned: it had several flames at different heights over a bed of coals, and the sticks charred once lit. It still did not look like a fire, and over the next two days more than ten changes went into it.

Each change fixed something that only showed once the one before it was in. The glow under the sticks was a pale card lying on the ground, so it became small, deep red-orange coals. The burning sticks looked bleached, because an earlier pass had painted them with the torch’s own picture, so they now darken toward black. A pale patch of ash under the lay went. The ring stones were smooth white ovals, so they became granite cobbles, blackened with soot on the side facing the flames.

The light was the next problem. At night the fire lit the whole camp evenly, and the grass around the ring read like daytime. On September 29 the light began to fall off the way a real fire’s does, bright close to the flames and gone a few steps away. Thin wisps of smoke caught the light, and fern leaves beside the fire stopped bleaching flat white.

A campfire of sticks burning in a ring of stones at night, three flames rising from the wood, with the dog sitting in the grass in front of it, its eyes glowing green
Development capture · The dog by the fire in the early hours of September 29, before the fire learned to burn down.

Then the fire’s bed started to keep a record. The more wood a fire has burned, the wider and ashier its bed of coals gets: black charcoal with cracked grain, half-burnt stick ends and drifts of pale ash, glowing in a few spots by day and dimly through the cracks at night, graying over as the fire dies. It is saved with the world and is the same for everyone in a shared one.

The last change, late on September 29, was the one that made the others read as true. A fire now burns down. About a quarter of the way through a lay one stick sags and falls in, a couple go with it, and the rest follow. The fallen sticks burn shorter into the coals, and sticks you add afterward are laid across the fire instead of leaning on a cone that is no longer there.

Judging a fire from a single frame is easy to get wrong, because a fire changes every second. The captures here are single frames. The burn-down only shows over minutes, so to see it, light one and wait.