I found a really fun game while Stumbling around. It's quite challenging. I think I may have mentioned it here before. I can't remember because I've seen some other really good ones, too!

There's a link to embed it to your website, but I couldn't get it to work correctly here. The link to the game is right here. Try the game, it's fun! Leave your score in the comments. I'm going to have my kids play; it's a great educational game!