Portal Worlds

Sandbox is a pretty popular genre that has won a huge army of fans primarily due to the almost complete freedom of action in which you need to create entire game worlds. Most of these games involves a single passage, however, recently become increasingly popular online projects and sandbox is no exception.
Portal Worlds - an online social sandbox where you have to create a whole world, and you will have the opportunity to not only use ready-made elements, but also create their own blocks. A number of possibilities just do not count. Each world is just a part of the global online project.