clubpenguin.com poptropica.com habbo.com (this is a really good one for teens) neopets.com
nijit101
It is poptropica.
roblox
Xivio.com is great! Its a 3D no download free virtual world!!!
wizard 101
I think IMVU could do it?
well there one i know switchin it a wedsite with 4 virtual worlds
Try Xivio.com, its a free 3D virtual world! No download too!
MoshiMonsters.com ClubPenguin.com
there issmallworldsmovie star planethowseweeworld
Meez!
Smeet is a Very good virtual world. I love it