Valve Steam Portal

valve steam
Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by the Valve Corporation. It is used to distribute games and related media online, from small independent developers to larger software houses.

portal
Of or relating to an opening in an organ through which major blood vessels pass, esp. the transverse fissure of the liver
a grand and imposing entrance (often extended metaphorically); "the portals of the cathedral"; "the portals of heaven"; "the portals of success"
portal site: a site that the owner positions as an entrance to other sites on the internet; "a portal typically has search engines and free email and chat rooms etc."
portal vein: a short vein that carries blood into the liver