I think this has been a long-term vision. I distinctly remember reading it in interviews with both Sweeney and Blezsinski from before the release of Unreal; tha

I think this has been a long-term vision. I distinctly remember reading it in interviews with both Sweeney and Blezsinski from before the release of Unreal; that they had a vision of connecting virtual worlds. You hop into a portal and you're in a completely different game that you were in before. IIRC, Unreal Engine 1 had the capability of assigning an unreal:// URL to a portal.