Proto-Indo-European Hangman!
AllThingsLinguistic on tumblr just posted something brilliant: an online game of Proto-Indo-European Hangman! So, language families are groups of languages with a common ancestor, that most old language is known as the proto-language. The word family is often used both to refer to the top-level-grouping and sometimes also lower levels. I prefer using it only for top-level, but hey that's me. There's been roughly 27 proto-languages reconstructed at that top-most level. It should come as no surprise that Indo-European is one that we know the most about. The study of languages history and reconstruction is within the field of Historial Linguistics. It's an area where the debates can get unusually intense, for example like when Burushaski was suggested as being IE and not an isolate. (Isolate = language with no known living relatives.) As an illustration of the field: Ethnologue counts 130 families, Campbell (2007) 350, Nichols (1992) approx 300, WALS 212 and finall...