Hey not sure if this is the right place to put this, let me know if it isn't.
So I found this gem on steam
http://store.steampowered.com/app/274980/
Its 9 dollars for the game and one language and then right now all the other packs are on sell for 2.50 right now.
I tried it out and its worth the nine dollars, heck I like what this guy was trying to do so I ponied up the other 22 dollars and got all the other languages while they were on sell (heck who knows when I want to learn a few things in Bulgarian...sadly no russian yet, but that's the next one on their list to put in the game).
From what I have played, it is in no way as in depth as say Rosetta Stone (this only covers vocabulary really), but for $9 I found myself learning a great deal more than I figured and having a bit of fun while doing it.
If anyone has used Rosetta Stone (like I have) it does take some learning idea from the system (One of the parts I found most helpful) and that is you walk around and click an object, and it says and displays the word for it. Once you have clicked a number of items you have a timed test to find the words it say and displays around the area you are in.
So if you are looking to learn a language, this give you a great start on vocabulary learning.