Like the quiz as always, but i have noticed on every quiz on jet punk i do Rio is always accepted for Rio de Janeiro. I think that also explains why its the lowest guessed city on this quiz. Please make typing in Rio be acceptable.
Oi, Mr or Ms Urben, quit whining! If you (a) read the instructions and (b) check the referenced quiz to see which cities made the top 50 on size, you would have seen that none of your list (bar one, which came in at 23rd and so missed the cut for this one) even appeared there!