What about Old English?
I think Old English would be an interesting addition to Duo. Years ago after hearing a sample of it, I thought it was pretty neat and thought about trying to learn it, but it fell off my radar. What do you guys think? I haven't seen anyone else mention it. I know it would be a "just for fun" language .
That sounds really interesting. I just thought about how we have period movies about what we think life was like all those hundreds and thousands of years ago, but I don't think many realize just how different the sound was as well. Our own native language would probably be foreign to us.
I hope it will come, it is not just for fun, it helps learning about language evolution, and english per se.
I assume you are familiar with that there is a version of wikipedia in old english.
You'd probably like this podcast series: http://historyofenglishpodcast.com/2013/07/ Somebody mentioned an episode of it a few days back and I'm finding very interesting. (If anyone reading this is that person, then thanks, I couldn't find the post again to say it there). It starts way back with Proto-Indo-European and works forwards though to modern English. The style is a little dry, but because of the content that hardly matters.