Pou - Pou is your cute alien pet who LOVES to eat and play!
Toontown Rewritten - Toontown Rewritten is a Free to Play, Browser-based, MMORPG, and Virtual-World video game developed and published by Disney.
My Boo - Make your adorable little Boo perform numerous tricks and play exciting mini games!
Neopets - Neopets is an Amazing, Virtual World, Massively Multiplayer Online, Role-playing and Fantasy-based video game developed and published by Viacom.
PetPet Park - PetPet Park is a Fantasy-based, Virtual-Pets, Single and Multiplayer video game developed by Nickelodeon Kids and published by Virtual World Group.
Animal Jam - Animal Jam is really a virtual world for kids that includes real animal and plant information towards fun storylines which are maintained by National Geographic educational content.