A free MMORPG that's good for kids?

Club Penguin! It is the most fun MMORPG game I have played! It involves a virtual world containing a range of online games and activities. Players use cartoon-penguin avatars in a winter-set virtual world. While free memberships are available, revenue is predominantly raised through paid memberships which allow players to access a range of additional features, (such as the ability to purchase virtual clothing, furniture, and in-game pets called "puffles" for their penguins through the use of in-game currency). The game was designed for ages 6–14. Thus a major focus of the developers has been on child safety, with a number of features introduced to the game to facilitate this — including offering an "Ultimate Safe Chat" mode, whereby users select their comments from a menu; filtering that prevents swearing and the revelation of personal information; and moderators (along with veteran players) who patrol the game, so it is safe for your 7 year old.

NEXON.NET MAPLESTORY. IT IS ADDITCTING BUT IT HAS NO GORE OR BLOOD.