Any virtual worlds

Well I have lots and lots of them. And here they are:

Wiglington and Wenks
Toontown
Pandanda
storyjumper
Sparkcity
Girlsense
Woogi world
Ty girls (Need to buy Ty girls plush toy doll)
Webkinz (Have to buy a Webkinz plush toy or it won't let you play)
Buildabearville
Secret builders
Ecobuddies
Pixie Hollow
Woozworld
Panfu
Fantage
LPSO
Club penguin
Wizard101 (Download)
Hello Kitty Online (Download)
Moshi monsters
Barbie girls

And that's all the virtual worlds I know or remember that are FREE and fun! Hope I helped!