The object of this quiz is to adjust each circle's radius so it contains the target population shown at the right but ONLY within Europe. When you click Start you will be shown a marker on a random populated Europe grid square (there are over 90K 10x10 km grid squares used for the data, courtesy of https://human-settlement.emergency.copernicus.eu/index.php). Also you will see an adjustable circle of radius 100 km to start. Adjust the circle's radius by dragging it until it contains the target number of people shown - this target will be between 5 and 100 million people. Then click submit. You are scored on how close your circle's population is to the target.
PLEASE NOTE: ALL of Turkey is included in counting population (not just European portion), and the portion of Russia west of 61.5 degrees E (just east of Chelyabinsk). Nothing outside Europe (such as Africa or middle east other than Turkey) is included toward the population count within a circle.
Quiz Takers 
Find the box where you type the answer, would be a good game!
Huh? It’s the white guess box above where the Street View shows.
I’m pretty sure I’ve got the highest and lowest scores on this particular quiz (for now), and I’m very proud of it. I paused a round earlier, left it a few hours and it racked up a score of -14,000.
do you only have a set number of places? seems like stevenage, st albans and sutton coldfield appear every round?
100 largest uk places are the basis, per the directions
I got Wallasey in a game just now which definitely isn’t in the 100 biggest places in the UK?
it is http://citypopulation.de/en/uk/cities/
I think Worthing might be bugged out
i love this game
thanks!