There is IMVU and Second Life however you have to download them in order to play. There is also Smeet, Ourworlds and many more which can be played in the browser and require no downloads to play.
Are There More Virtual Worlds Like Small Worlds?
Well there gaia, (my username if you want to add meh is zelda_of_TP),free realms (you can have a pet,turn into stuff and more!) and a good one called kaneva. The only one you don't have to download is gaia
Corse, there are lots that I know of. For example theres clubpenguin, dizzywood, meez, my fave one is foopets.com. But if your looking for something different I have some they are
toontown.com
poptropica.com
planetcazmo.com
dressupchallenge.com
girlsgogames.com
webkinz.com (plush toy with code needed to make an account)
and last there is
dressandplay.com
toontown.com
poptropica.com
planetcazmo.com
dressupchallenge.com
girlsgogames.com
webkinz.com (plush toy with code needed to make an account)
and last there is
dressandplay.com
Www.smeet.com
Dizzywood, clubpenguin, and weeworld I think are kind of small worlds
Well there's dizzywood I think
Cool!