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Draw one loop to enclose the day’s target number of people.
Headcount gives you five different population targets per day and one drawing per round. Trace a loop anywhere on a glowing world population map, lock it in, and the game counts the real number of people living inside your shape. Score 0–100 on how close you got in each round. The five scores add up to 500.
Round score = 100 × (1 − |log₁₀(enclosed ÷ target)|), floored at zero and shown to one decimal. What matters is the ratio, not the raw difference: doubling the target costs the same as halving it, and you have to be a full 10× off — in either direction — to score zero.
| Result vs target | Score |
|---|---|
| Exactly on target | 100.0 |
| 2% off (9.8M or 10.2M vs 10M) | 99.1 |
| 10% over (11M vs 10M) | 95.9 |
| 25% over (12.5M vs 10M) | 90.3 |
| Double or half (20M or 5M vs 10M) | 69.9 |
| 4× the target (40M vs 10M) | 39.8 |
| 10× off either way (100M or 1M vs 10M) | 0.0 |
Population comes from GHS-POP (EC Joint Research Centre, 2025 epoch), a global ~1 km grid modeled from census and satellite data. Counts are estimates by nature; the scoring curve is deliberately forgiving inside a few percent. Daily and practice scores are computed server-side with the same population calculation, so everyone is judged by the same numbers.
Each day there are five different population targets. You trace one loop anywhere on a world population map, lock it in, and the game counts the real number of people living inside your shape. Each round scores out of 100; all five add up to a daily total out of 500.
Round score = 100 × (1 − |log₁₀(enclosed ÷ target)|), floored at zero. Because it is a ratio, doubling the target costs the same as halving it, and you have to be a full 10× off in either direction to score zero.
GHS-POP from the European Commission's Joint Research Centre (2025 epoch), a roughly 1 km global grid built from census and satellite data. Daily and practice scores use the same server-side population calculation.
Yes. Finish five official rounds, committed blind with no live counter. Then play practice rounds: submit to reveal the count and score using the same calculation as the daily.
Yes. Every daily puzzle is free with no account required. Premium adds unlimited practice, advanced stats and global comparisons, the full Travel Passport, beta access, and an ad-free experience.