Google launched two online projects today.
More intriguing, and certainly a lot more fun, is a word game called Semantris.
Basically, your shown a bunch of words in blocks. Then, you type in a word that you think is related in some sense to one of the words in the boxes. Google’s Artificial Intelligence then tries to guess which word the one you typed in is connected to and, if it’s correct, the blocks get higher.
I’m not saying it’s the best word game in the world, but I think Intermediate and Advanced ELLs would find it useful and fun.