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