Wikipedia
GameSpy was a provider of online multiplayer and matchmaking middleware for video games. The company originated from a Quake fan site founded by Mark Surfas in 1996; after the release of a multiplayer server browser for the game, QSpy, Surfas licensed the software under the GameSpy brand to other video game publishers through a newly established company, GameSpy Industries, which also incorporated his Planet Network of video game news and information websites, and GameSpy.com.
GameSpy merged with IGN in 2004; by 2014, its services had been used by over 800 video game publishers and developers since its launch. In August 2012, the GameSpy Industries division (which remained responsible for the GameSpy service) was acquired by mobile video game developer Glu Mobile. IGN (then owned by News Corporation) retained ownership of the GameSpy.com website. In February 2013, IGN's new owner, Ziff Davis, shut down IGN's "secondary" sites, including GameSpy's network. This was followed by the announcement in April 2014 that GameSpy's service platform would be shut down on May 31, 2014.