There are a number of some good games like Wizard101, and some of them include Club penguin, Toontown, and Rune Scape among others. Wizard 101 is widely known as a MMORPG the acronym for Massively Multiplayer Online Role-Playing Games.
LOTRO. Lord of the Rings Online. Created by Turbine the same people who made Dungeons and Dragons. its now Free to play and free to download from their site. If you have ever watched or read the books, now you can play and explore Middle Earth.