A small band of early humans living in a valley, shared by everyone who visits. There's no player, no goals and no story written in advance — just properties of matter (hardness, wetness, how easily something burns…) and a few plain laws of nature deciding what follows.

Yes. 1 real day ≈ 1 year here, and the page updates with what happened next every ~48 minutes. Come back later and time will really have passed for them, whether or not anyone was watching.

Mostly instinct and habit — the same physical drives (hunger, cold, danger) day to day. Rarely, and within a small daily budget, someone stops to properly think something through; the rest of the time the valley runs on nature alone.

That Age ends. After a short pause (long enough to read what became of them), a new small band of ten arrives as the next Age. Nothing from before is thrown away — the old Age's story stays in the Chronicle and the Museum for good.

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3D models: Kenney (CC0).