Type 'easy' or 'hard' to begin the quiz. Easy is a 15-degree grid, hard is a 10-degree grid. Then, try to name the SECOND LARGEST city in each grid square. To name a city, you must first click on the grid square to make it have a GREEN border. Then, type in the city answer for that square followed by a '.' (a period). You are given a score from 0 to 100 based on your answer's population compared to the 2nd largest city accepted in that square (100 being you named the 2nd largest city). If you guess the largest city it will be based on the ratio of the 2nd largest city's population to the largest.
At the end of the quiz the 2nd largest city will show in each unanswered square, and for those answered the 2nd largest city will be listed next to your score if you didn't answer it.
Quiz Takers 
why is denmark not an answer? I thought it bordered just germany and canada
i forgot abt greenland.
finally got all the 4 ones. this was the hardest, very tricky
Got Morocco and Lebanon at the end not knowing if Western Sahara would be included (it’s not) or if the Golan Heights would be included in Palestine (they weren’t)
Golan heights could be argued as either Israeli or Syrian – but surely not Palestinian?