Blue Mars is a free to play massively multiplayer virtual world featuring stunning graphics, realistic characters, and endless social bonding activities. The Blue Mars virtual world is made up of an expanding set of independently operated cities that feature unique themes, activities, and attractions such as shopping, avatar customization, unique personal spaces, and games like dancing, racing, and golf. Cites on Blue Mars are tied together with a unified login system, persistent global Avatar ID, and platform wide participation based reward system.
More Information: http://www.bluemarsdev.com/