Some addition/plus signs are hard to spot! If you cannot see the addition/plus sign on one or more flags, please notify me in the comment section, so I can explain/show where the addition/plus sign is located.
great quiz, however I would retitle this to "Country flags with crosses" since most of them are crosses (like the union jack, or the Scandinavian cross) and the rest are in the coat of arms.
Well, I made a quiz called that already and they are all plus signs, example, the first five are "kinda" plus signs, the last 4 are "union jack" flags, but they all ave a plus too, look closely at the red line going straight through the middle and also the rest of the line going through the left to right.