Hey, I think I have a game like that. I think it's called Spinergy. Never played it because it's a family game meant for lots of people, but it looks fun.
Well...
I'll try to explain what it is, because the name wouldn't tell you anything.
So, in Hungary, we have a dictionary for foreign words. For example, the word "evolution". You know what it means, because you're that smart, but it comes from Latin, and it'd be possible for you to not know it. That's why there's such a dictionary.
And the game is about rare, not used foreign words. You have to try to write down a definition of a word that you've never heard about before. And so it works. It's fun, and you also can learn a lot.
Therefore, pure awesomeness. ^_^