Second Life - Second Life is a virtual reality platform where individuals interact in a virtual world. The software was developed in 2003 by Linden Labs. More than one million people now regularly use the software.
Doodle God - Doodle God puts the power of creation in your hands!
Movie Star Planet - Movie Star Planet is an Online Virtual World, MMO, and RPG Simulation by MovieStarPlanet.
Gleamville - Gleamville is a Free, MMORPG, Browser-based, Social Networking, Fantasy and Virtual World Simulation.
MySims Kingdom - MySims Kingdom is based upon The Sims series but provides special and extremely different gameplay to the original series making it definitely worth your consideration.
Little Alchemy - Little Alchemy is a Free to play, Browser-based, Puzzle and Education video game created and published by Reckloak.