About Planetrotter

Your goal is to guess the secret city of the day in 7 tries or less. With every guess, you'll get clues based on different attributes like Continent, Country, Population, and more. For numerical values, arrows (↑/↓) will point you in the right direction. For the distance, the compass needle will point you towards the target city! The tile colors (Correct, Close, Wrong) will guide you to the correct answer.

Every guess drops a numbered pin on the globe, and a flight route is drawn from your previous guess to the new one. That way you can see your whole journey towards the city of the day. You can spin the globe and zoom in and out yourself.

Yes, Planetrotter is completely free to play. The goal is to make learning about geography and world cities fun and accessible to everyone.

A new mystery city is released every day at midnight, your local time. This applies to both Normal and Expert mode, so there's always a new challenge waiting for you.

In Normal mode, the city of the day is chosen from a list of more well-known cities. In Expert mode, the difficulty is significantly increased as the selection is made from the entire database—including rarer and more obscure locations. A true test for the geography buff!

The city of the day is selected from a carefully curated list to ensure a good variation of difficulty, size, and location. So while you never know what's coming next, the sequence is designed to make every day a new and exciting challenge.

Population covers the whole urban area – the continuous built-up area – according to the GHSL Urban Centre Database 2025 from the European Commission’s Joint Research Centre (CC BY 4.0; we use the 2025 population of each urban centre). In the Nordic and Baltic countries, the USA, Canada, Australia and New Zealand, where satellite data undercounts sparse suburbs, and for towns under 50,000 inhabitants, we use the national statistics office’s urban-area figure for the town itself, never the municipality’s. Where several cities share one urban area, the main city – for an area named after several cities, the largest of them – gets the whole area and the others keep their own figures. Only in urban areas without a dominant city do the cities share the population in proportion to their own. The founding year is the first recorded urban phase according to Wikipedia; estimated years – derived from a century or dated by archaeology – are marked “c.”. A city formed by a merger under a new name has the year of the merger as its founding year. Corrections are very welcome at [email protected].