About Pyramiddle
Pyramiddle is a free daily game where you guess the mystery country from the shape of its population pyramid — the chart that breaks a country's people down by age and sex. You get six guesses, with distance, direction and proximity hints after each one.
Why it exists
A population pyramid is one of the most information-dense pictures in all of social science. Its shape tells you whether a country is young and fast-growing, ageing and shrinking, scarred by war, or reshaped by migration — long before you ever see its name. Pyramiddle turns that into a daily puzzle: a small, fun way to build real intuition about geography, demographics, economics and global trends, one country a day.
How it's built
Every pyramid is drawn from the United Nations' World Population Prospects 2024 — the gold-standard global demographic dataset — so the shapes you're reading are the genuine article, not stylised. After you solve each country there's an optional bonus round of quick demographic trivia about the place you just found. Full sources and methodology are on the Data & methodology page.
Who makes it
Pyramiddle is a small independent project — built and run by one person, free to play, with no ads cluttering the game. If you're enjoying it, the best thing you can do is share your daily result and tell a friend.
Got an idea, a bug, or just want to say hello? I'd genuinely love to hear from you — drop a note on the contact page or use the feedback box at the bottom of the game.