Upon clicking START you will be shown 5 circles, one at a time, with increasing radii: 50, 100, 250, 500 and 1000 km. The object is to move the circle to the location such that it covers the most amount of people, based on Europe population density data. You are scored based on how many people you cover compared to the maximum possible (score is based on the ratio of people in your circle compared to max possible - score is not an exact ratio but falls faster than that).
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 
Perhaps a list of the stations you’ve guessed somewhat like with the periodic table.
Possibly with a per letter scorecard
1st try 77 done
A National Rail stations quiz for all train stations in the UK would be neat.
More time. There’s no way you can get it all done in that time (yes, I see two people have done so, but I am very dubious). Also, it didn’t pop up afterwards with the top 50 most difficult ones. Was this intentional?
there’s 30 minutes now and there are bonuses along the way…so I bumped it up a bit.
Should have more time, I could have done way more with more time. Otherwise good 🙂
a ton of UK (especially London) new users here – so this is for you! let me know if i need to accept any alternates.
Mr. Holmes, first name Sherlock, would like you to know the street he lives on is the name of a Tubeway Station.
Very good quiz, thank you. Echoing gmaric.22, could have done with some more time. You’re asking for two seconds per guess which isn’t possible for us mere mortals.
ill bump it up a little soon