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.
This quiz is a work in progress. The source map is the best resource I could find on the subject, and I did my best to extrapolate the countries based on it and additional resources that are available. If you are aware of any additions or deletions needed to the country list, please let me know.
Thank you!