meez but if you are a kid i say fantage for u
Weeworld and meez.
Best online virtual world is Second life.
AeclecticTarot.com
You can get a virtual server at any store that offers them or you can buy them online. There might be deals online for getting a virtual server for your computer, your best bet would be to look for sales online and in local stores to get the best deal.
woogiworld
Ourworld
the best virtual world where you can do, say, and act anyway like has to be Smallworlds.
ONVERSE!it is the best virtual world sign up here
Really, if you want to build virtual worlds, you'll have to download a game. Or you could go to a store and buy one. I would suggest Minecraft, it is pretty good and considered one of the best games of all time.
If you are looking for a website there aren't many that are free. But if you want a game that has virtual family's the best out there is Sims.
Runescape.
DJ Sheepwolf Mixer 4 is the best ive seen yet hopefully they can put better dj games online. Virtual DJ is THE BOMB! but u have to download it on ur compuer but the other cool thing is that u can mix ur own favrite songss! :)