Habbo - Hobbo is also known as ‘Hobbo Hotel’.
Onverse - Onverse is game that includes a huge three dimensional world for you to explore.
IMVU - IMVU is multiplayer online video game created by ‘IMVU Inc’.
Poptropica - Poptropica, a virtual world for kids to travel, play games, compete in head-to-head competition, and communicate safely. Kids can also read books, comics, and see movie clips while they play.
Suburbia - Suburbia is a Facebook video game heavily inspired by The Sims.
Kaneva - Kaneva launched back in 2004 and it has since grown to a lot of users to create a big virtual world experience that is comparable to the big names in the genre such as Second Life.