Observed arrival · 2026-10-12

Graphle — Guess the hidden scale

graphle.org Visit website

Editorial interest 77/100 Selection signal · not a rating of the site

A daily graph game where you estimate the missing y-axis values for real-world data.

Landing page captured for the 2026-10-12 issue.

For: People who enjoy daily puzzles and reading graphs
Worth noticing: Derivative Mode asks players to estimate rates of change; measured data uses average change between observations.

Field notes

The sample round covers life expectancy around the world from 1960 to 2023. The instructions distinguish mathematical functions from measured data: the former use exact derivatives, while each measured-data point represents average change between observations. The page also describes a separate stock convention, using change per trading session, and says past daily rounds become archives.

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◎NicheUnusually specific use

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