I only Know a few girl virtual worlds but they are pretty good!
Here they are:
Barbiegirls.com V.I.P. or not optonal PS: V.I.P. memberships are not refundeble
Be-bratz.com you need a bratz doll with usb plug
Pixieholow.com membership or not PS: Disney faries
Ty girlz Purchase a Ty Girlz doll to unlock access to a world of fab apartments and more
Bella Sara you purchase collector cards that allow you to adopt your own horses and purchase other fun virtual items
Then I have some virtual worlds for both girls and boys
Here they are:
Clubpenguin.play Membership or not: you can create a penguin
The travels of Wilington and Wenks I think it also has members
Secret builders membership or not level of experience
poptropica a virtual world full of missions
Build a bear ville if you have made an bear at build a bear workshop bring it to life here
Webkinz World a website for owners of the Ganz stuffed animals
Toon Town USA a website for kids from the Walt Disney Company
Chocobots a world of funny looking aliens
Ridemakerz is designed as a virtual world for boys, although girls are welcome, too. It allows players to build a custom car to drive around
Free Realms is a virtual world where kids can take on human or pixie form
Action AllStars is a virtual world just for sports fans There is a lot of pressure to upgrade to a paid account
SeaPals requires the purchase of a plush SeaPals pet
Dizzywood is one of the more unique virtual worlds for boys and girls
Whyville is one of the oldest virtual worlds for boys and girls
Girlsgogames.com- different fun games even for boys! Don't let their name confuse you...
GirlSense- you design clothes and make boutiques
Virtual worlds for boys:
Disney's Pirates of the Caribbean Online Create your own pirate personality Pirates of
the Carribean Online is rated E10 (ages 10+). Parents should note that the game has some mild violence, as well as the use of voodoo.
stardolll is the best trust me
Here are some: Fantage: A virtual worlds for about 7-18 woozworld: A virtual world for 6-18 GirlsGoGames.com: A girls game site with lots of online games.
FREE REALMS ALL THE WAY. its actually really fun.
There is only one, Xivio. It is free, no-download, and 3D.
teensecondlife.com