Learning and Games: Borderline

For Christmas, a friend gave us "Borderline: Africa Edition," a geography card game similar to crazy eights.  I'd love to collect the various versions of these games, because Borderline: Africa is turning out to be a fun way to learn the geography of the continent I've always been least sure of.  The game is simple: you play cards that border the card most recently laid down.  N. likes it.