FantagePoptropicaSome of the Facebook games
Xivio.com is great! Its a 3D no download free virtual world!!!
Neopets,Howrse,and Foopets
foopets.com
Supersecret.com Fantage.com & Boombang.tv
well there is Club Penguin its really good,moshi monsters,binweevils,moviestarplanet
You can maybe play the Dragon Cave, it is a pretty good game.
Club Penguin, Poptropica,Webkinz(you have to buy one) Buildabearville is a good one so try them i like them!!!
Neopets is a good virtual pet game.
Xeko is an online site that kids can create their own virtual elf. You can design your elf and play games to do good in the real world.
guffins,power pets,adoptme,neopets,virtual pets world,virtualfamilykingdom.
ONVERSE!it is the best virtual world sign up here