Learn the numbers

Last updated: 10 November 2026

Short explainers for ranki.gg puzzles that stay on the safe side of the schedule. Every figure is copied from the puzzle or the series already in the game.

These pages do not add a dataset, a country, or a cause that the game's own fact and source line do not already state. Sensitive topics are not written up here. They stay in the daily game only after the AdSense-safe date set in the app, and they are not linked from this index.

Each explainer has the countries on that card or the top of that series, the unit, the source, and a link that opens the puzzle. Rank it pages walk the order from high to low. Tier it pages name who shares a tier. The quiz page repeats each card's fact. Guess the number pages use the FAO and World Bank series stored for tea, coffee, and cocoa.

• Rice BucketsRice available for consumption per person, FAO food balance
• Vampire HuntersFAO apparent consumption per person
• Grindset NationsAverage annual hours worked per worker
• Happy PlacesLife satisfaction (Cantril ladder, 0–10)
• Human DevelopmentHuman Development Index
• Into the WoodsForest area (% of land area)
• Tear JerkersOnions available for consumption per person, FAO food balance
• Green MachinesRenewable energy consumption (% of total final energy consumption)
• Potato-eatersPotatoes available for consumption per person, FAO food balance
• Built to LastLife expectancy at birth, years, 2024
• Not Just the UKPeople who speak English
• One ClockPopulation of countries with one time zone
• Hello, WorldTotal speakers, native plus second language (L1+L2)
• Language familiesWhich family the main language sits in, from the ranki.gg Tier it.
• Counting on one handHow many numbers one hand can show, from the BBC Future methods on the ranki.gg card.
• How many time zonesStandard time zones by country, including territories, from the Wikipedia table ranki.gg uses.
• Who invented it?The eleven who-invented-it answers and the fact printed on each card.
• Tea and mate supplyFAOSTAT 2023 food supply of tea, including mate, in kilograms per person.
• Coffee supplyFAOSTAT 2023 food supply of coffee and products, kilograms per person.
• Cocoa supplyFAOSTAT 2023 food supply of cocoa beans and products, kilograms per person.

More on how a round works: How to play. Where the publishers come from: Data sources and methodology.