Draw a circle around the target population

Headcount is a free daily map game where you draw one closed loop for each of five population targets and submit each shape to reveal your result.

No. The loop can be any closed shape, allowing you to follow coastlines, include several cities, or exclude sparsely populated areas.

Headcount uses the European Commission Joint Research Centre's GHS-POP 2025 population grid, which models global population at roughly one-kilometre resolution from census and satellite data.

You get five official rounds each day, one submitted loop per target. After all five, practice gives you fresh targets and reveals the population and score when you submit.

Each round scores up to 100 points based on how closely the modeled population inside your loop matches its target. Five rounds add up to a daily total out of 500; equal proportional misses above or below the target receive comparable scores.