It is free to join. Player choose an avatar to represent themselves. Once they are sign in they can interact with other avatars, places or objects. They can explore the world, socialize, create, shop and trade things with another avatar. It is a platform that principally features 3D-based user-generated content. Avatars can use Linden dollar to shop. This program is intended for people aged 16 and over. It is created by its own users. There is no set up objectives. It is not a game either.