A challenge for your mental model of the world map

Here is a great exercise to test how accurate is your perception of the relative sizes of countries and continents. My score was 67% in my 1st try and 74% in my second try. Not good considering I'm doing a PhD in geography. sssh don't tell my university otherwise they might not give me my degree

This is part of a PhD research at Ghent University. ht Sebastian Meier‏