The present invention is directed to attaching an external virtual universe to an existing virtual universe. A method for enhancing a preexisting virtual universe (VU) in a computerized system may include providing an external virtual universe in a second computerized system, where the external virtual universe is configured so as to be attachable to the first, preexisting virtual universe. As a result, residents of virtual universes can create, run, and/or host their real estate, inventory items, and/or avatars (including all necessary geometries, textures, scripts, etc.) using their own computing devices, which may be inserted, attached, and detached from the VU grid.