Type 'easy' or 'hard' to begin the quiz. Easy is a 5-degree grid, hard is a 2.5-degree grid. A grid will be placed randomly on the map. Then, try to name the 1st-5th largest city in each square, depending on what the square label displays (so if the label says '3rd Largest' you are trying to name the 3rd largest city in that 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 target city accepted in that square (100 being you named the correct city).
AK and HI are NOT included in this quiz as they often have grid squares with only one answer for this quiz.
At the end of the quiz the target city will show in each unanswered square.
Quiz Takers 
It would be great if the neighbourhood names showing up on the map would be optional – right now they make it hard to see the map, especially when zoomed out and you want to see the whole city
you should make one for the capital of canada.. ottawa!
this challenge is impossible for Toronto it wont let me enter port union, the Kingsway, Scarborough junction, the Toronto islands, cabbage town, harbourfront, and bedford park. what i just listed are names of neighborhoods that when i highlight google maps match the shape of what i am missing so this challenge either some incorrect names or its broken.
It looks like Toronto updated their neighborhoods in 2022…I’ll try to get it updated to the current 158.
Edit: I’ve updated this to the current 158 official neighborhoods. Keep in mind you have to name them pretty spot-on with how the city officially named them.