Use the flash game to enter as many of the 500 largest European cities you can. When done, start the sporcle quiz and enter all codes generated. Enter ALL CODES that appear. See NOTE and TIPS.
NOTE: Make sure you are entering the codes correctly - sometimes the number 1 and letter l, as well as 0 and capital O look similar. There is no time limit for now - future similar quizzes will have bonuses based on time or a limit. A couple countries included municipalities as they were listed in the source. "." is not accepted for "St." just use "St" - Former USSR bonus does NOT include Russia, Balkan bonus does not include Romania, Turkey or Slovenia. Russia cities east to Urals are included - TIPS: You can right-click to zoom in on a certain area to work on it and see the dots better. Dragging the input box to the area you are viewing helps during zooming. Moving the mouse over a green city will show the city's name above the map. Clicking the 'hide' button will hide guessed cities, 'size' button will resize the guessed dots based on population. Smaller cities are placed above larger ones when the dots are initially placed. If flash does not load try reloading the page.