Popdle is a free daily geography game where you estimate the population of a randomly selected country. Each day brings a new challenge: you get six guesses to land within 5% of the real population, with higher/lower feedback after every attempt. The game is designed to be quick — most rounds take under two minutes — but rewarding enough to build a daily habit.
Every day at midnight (your local time), Popdle selects a country using a deterministic algorithm seeded by the date. That means everyone around the world plays the same country on the same day. You enter your guess in millions (for example, 0.8 means 800,000) and the game tells you whether to go higher or lower, along with a color-coded accuracy band showing how close you are. Green means within 5% — that is a win.
Most people have a surprisingly poor sense of how many people live in different countries. We tend to overestimate the population of places we hear about in the news and underestimate everyone else. Popdle is a low-stakes way to calibrate that intuition. After a few weeks of daily play, you start to develop a genuine feel for global population distribution — which turns out to be useful context for understanding economics, elections, climate discussions, and more.
Popdle pulls its data from two trusted open sources. The list of sovereign countries comes from Wikidata (licensed CC0 / public domain). Population figures are fetched in real time from the World Bank Open Data API (licensed CC BY 4.0). This means the numbers stay current — when the World Bank updates its estimates, Popdle reflects the change automatically.
After you finish the daily puzzle, a "Practice" button appears in the header. Practice mode gives you unlimited rounds with randomly selected countries, so you can drill the ones you find tricky. Your practice results are not tracked or shared — it is purely for learning.
When you finish a game, Popdle generates an emoji board — a compact visual summary of your guesses — that you can share with friends without spoiling the answer. The share text includes your score (e.g., "3/6"), the emoji row, and a link back to the game.
Want to get better? We wrote a detailed strategy guide covering binary search techniques, population reference anchors, and the math behind optimal guessing.
Questions or feedback? Reach us at [email protected].