My favorite one is fantage.com clubpenguin.com imvu.com zwinky.com chobots.com shockwave.com bored.com And there are some good online websites for 13 year olds and younger. Hope I helped
Try Runescape people especially kids like it.
There are many good online games sites. Examples of good online games sites include popular on the web sources such as Addicting Games, Yahoo! Games, and OMG Pop.
There are many online games for girls, here are some suggestions:GirlsGoGamesClub PenguinOyunlar1Poptropica
Good online car games, are Need for Speed, Grand Turismo, and Forza.
second life is good
habbo is a good game for 15 year olds..
MAG
moderwarfare2
imvu or sims.
Pixie Hollow
zoo vet is quite good but im not sure if its online sorry