Hyperlinks in virtual worlds
Hyperlinks are, at present, a novel feature in virtual world platforms, aside from hyperlinks in the in-built chat clients between users' avatars. In the latter 2000s, however, a number of architectures were created for various decentralized virtual world platforms in order to facilitate easier travel of avatars between two or more separately-hosted grids or servers.
Open Cobalt uses a method of hyperlinking, known as "space-linking", which resembles a window frame or portal and, when revolved, shows a 360-degree real-time view of one region to a user in another region; such portals can also be walked through by users. Space-linking is an alternative to teleportation, a more common means of traversing between regions or spaces, and is also a primary means of travelling between whole grids.
Hypergrid in OpenSim
OpenSimulator also uses an architecture known as "Hypergrid", which allows users to teleport between multiple OpenSim-based virtual worlds by providing a hyperlinked map which indexes public grids. This allows for public grids to retain teleportation links to each other without having to be on the same grid.