You're right! It turns out the JetPunk map used for the Europe quizzes is missing the water inside the Netherlands. It is however on the world map quiz. Very interesting spot I've never notice do before!
And it is missing all of its islands. It hardly resembles it imo. I know with pixels some things have to be smoothed out, but this is ..., I dont know, it is way to late for me to think of a proper ending for that sentence.