Second Life developed by Linden Lab is another online computer game which gives an opportunity to earn real money. Actually, it is a whole virtual world, where players who are called residents, can explore, meet other residents, socialize, participate in individual and group activities. They can also create and trade items, virtual property and services with each other. One of the distinguishing characteristics of Second Life is that the players, not Linden Lab, create most of the content of the world. There is a 3D modeling tool in Second Life that allows any resident with the right skills to build virtual buildings, landscape, vehicles, furniture, and machines to use, trade, or sell. This is a primary source of activity in the economy. It is not an action or role-playing game – there are no levels, no clear winners or losers. This game has a lot of features, like transportation via vehicles, such as go-karts or even helicopters, submarines and hot-air balloons.