Type 'easy' or 'hard' to begin the quiz. Easy is a 5-degree grid, hard is a 2.5-degree grid. A random grid will be placed on the map. Then, try to name the THIRD LARGEST 10K+ European 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 3nd largest city accepted in that square (100 being you named the 3nd largest city). If you guess the largest city it will be based on the ratio of the 3nd largest city's population to the largest.
At the end of the quiz the 3nd largest city will show in each unanswered square, and for those answered the 3nd largest city will be listed next to your score if you didn't answer it.
Quiz Takers 
Please add support for all the swedish names
You can list some that I need to add, but my source site doesn’t have them except for a few so I’m not able to easily gather all the Swedish versions.
It is a bit inconsistent with the language. In English it should follow the majority language in the municipality. I found 3 in Ostrobothnia that were wrong: Molpe, not Moikipää. Solf, not Sulva. Kvevlax, not Koivulahti.
I’ll add those as alternate answers.
should be municipalities instead of settlements
I’m using settlements for this particular quiz similar to the Sweden and Norway ones so there are more answers.
but that doesn’t make sense as they are quite arbitrary and nobody in Finland thinks about cities that way