Antique Mommy put this link on her blog today.
Wanna test your vocabulary?
Play for free and the advertisers will donate free rice through the United Nations World Food Program.
There are 50 levels and the FAQ says that it's rare for anyone to get past level 48. I have 1 friend that will probably do it. This is your cue Donna! Let me know when you get there :-) I imagine this is good practice for Jeopardy.