Test Your Vocabulary and Help Others Too
Came across a site a couple of days ago that, as a writer and avid Scrabbler, I couldn't resist. FreeRice lets you test your vocab skills and donate food to the hungry at the same time. Each word you get right is worth 20 grains of rice.
You gradually work your way up the levels, with the top score around 50. I hovered between 44 and 47 most of the time, and quit when I hit 48.
Can't believe how many words I've never heard of! Give it a try. Great fun.