Why don't you give this a try: all you have to do is choose the correct answer [multiple choice] for a particular word meaning. For every definition you get correct, 20 grains of rice are donated. I forgot to look at how much I donated: I know it was 4200+
I do know my highest score was 45.
WARNING: If, like me, you are a fan of "It Pays to Increase Your Word Power" in The Readers' Digest then you'll find this site quite addictive!