This category is for sites dealing specifically with multi-user VR. This means networked software, using 3D graphics for shared communication, interaction, and virtual world building and exploration. Topics covered by this category include software and companies, active virtual worlds, research, news, and general information and discussion sites. Generally, software linked in this category should have an emphasis on object interaction, simulation, graphics and sound, rather than chat.
Second Life is a massive multiplayer online game that offers its players to have a "second life" in supplement of the first one. In the game, players are supposed to be whatever they would dream to be in the real life.