Are There Any Virtual Worlds That Don't Require Downloading?

Free realms, its so fun and interesting, especially safe

Well, my best answer is meez.com because all you need to do is make your meez then save and put your info inside it and then you have your meez and, this is a real answer that won't let you down plus you can be V.I.P. On meez.com plus I've been on all those other websites and I've been searching for like a thousand times I've been on the computer, and none of those people that gave you an answer  have the right answer because i went on those websites and they have downloading requirement so go on Meez.com and you'll see that im right!