<Tr> <Th> License </Th> <Td> Proprietary </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.secondlife.com </Td> </Tr> <P> Second Life is an online virtual world, developed and owned by the San Francisco - based firm Linden Lab and launched on June 23, 2003 . By 2013, Second Life had approximately one million regular users . In many ways, Second Life is similar to massively multiplayer online role - playing games; however, Linden Lab is emphatic that their creation is not a game: "There is no manufactured conflict, no set objective". </P> <P> The virtual world can be accessed freely via Linden Lab's own client programs or via alternative third - party viewers . Second Life users (also called residents) create virtual representations of themselves, called avatars, and are able to interact with places, objects, and other avatars . They can explore the world (known as the grid), meet other residents, socialize, participate in both individual and group activities, build, create, shop and trade virtual property and services with one another . </P>

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