Note: After a nearly a year, I realized I forgot to include Norway and Finland on this quiz. They have been added. (Honorable mention to The Netherlands and Luxembourg, which would both border Germany, Belgium and France if we counted the France-Netherlands border on Saint Martin.)
Amazing quiz! The concept seems so simple, and yet it was surprisingly hard to come up with any answers! I would definitely agree with the requests for more time. Having time to mentally search the world map and puzzle out the answers is part of the fun on this one :)