When it comes to virtual worlds for kids and teens, Runescape is leading the US market.
While all of these virtual worlds are growing rather quickly, growth is only expected to increase in the coming years. Runescape is an MMORPG that lets you create an avatar to live, play and earn a living in their medieval landscape. The game currency is called GP (gold pieces), and there are premium accounts available for those that would like to buy a subscription in order to enjoy the full benefits of Runescape.
While it looks like Runescape is the king of this particular virtual avatar game domain, Webkinz is currently growing at the fastest rate. Zwinky, the avatar creator, has also released their own virtual world game, introducing another competitor in the field.