My family is playing a fun year-long game called Virtual Stock Exchange. If your friends or family like an exciting game that doesn't cost a dime, go to vse.marketwatch.com and sign up to start one.
My family's game started at Thanksgiving and will last a year until next Thanksgiving. We each started with $100,000 virtual dollars and can invest it in any stock or fund we like. At the end of the year, who ever has the most money wins. We can even borrow up to $100K virtual dollars, so that give us $200,000 to invest.
I invested in some pretty bold stocks and haven't done too well yet. My husband invested $200,000 in the same stock! My lucky nephew bought some Netflix and watched it go up like crazy about a week ago. Everyone is far behind him! You can always see what your ranking is (see image to the left); and you can drill down to learn everyone else is buying.
You can learn a lot about stocks from playing as there are always some interesting articles on your homepage.