In each game, you'll be prompted for a starter city. A circle will then be created around that city. Your next guess must be within that circle or the game will end. Each subsequent guess creates a new circle with the guessed city at its centre. Try and get as many cities as you can. Good luck!

In 15 minutes try and name as many European cities with a population of more than 50K as you can. Population will only count to final score when all other 50K cities within 35 miles are also guessed.