When?

Each round names an invention, building or event, from the Giza pyramids to modern milestones, and a pin is dragged along a timeline stretching from 3000 BC to today. The real date is then revealed along with how far off the guess was. Past days sit in an archive with one free day, and a one-time roughly+ purchase unlocks the rest. The game runs in English and German.

Category

History, Estimation

How you play

Put things in order of time, Estimate a number

Languages

English, German

Daily puzzle

Yes

Archive

Yes

Website

when.roughly.is