Epic Games was initially founded under the name Potomac Computer Systems in 1991 by Tim Sweeney.
Potomac Computer Systems released its flagship product, ZZT,the same year. During the latter portion of ZZT's life span, thecompany became known as Epic MegaGames.
Gradually, the Epic brand grew with the advent of its shareware games, including Epic Pinball, Jill of the Jungle, Jazz Jackrabbit and One Must Fall: 2097.
In 1998, Epic MegaGames released Unreal, a 3D first-person shooter, which expanded into a series of Unreal games.The company also began to license the core technology, or Unrealengine, used for the series to other game developers. In 1999, thecompany changed its name to Epic Games and moved its offices, includingits Rockville headquarters, to Cary.
Its now one of the words leading game technolgy piorneers and licences its unreal, unreal 2 - 2.5 and new unreal 3 engine to all types of game companies over multiple game platforms.