Start by naming any country that France borders. Then name any country that borders any of those countries. Then keep going until there are no more countries left to name.
If you are interested adding Swedish and Finnish names as type-ins would be a great addition to this quiz. As a Finn i had some problems with remembering the right English translation for Etelä-savo (Southern Savonia) and Pohjois-savo (Northern-Savonia). I admit, this is partly due to me not being from that region.