The edition, released in 1999, included Warcraft II: Beyond the Dark Portal, provided Blizzard's online gaming service, and replaced the MS-DOS version with a Windows one. In 1996, Blizzard released an expansion pack, Warcraft II: Beyond the Dark Portal, for DOS and Mac OS, and a compilation, Warcraft II: The Dark Saga, for the PlayStation and Sega Saturn. A sequel to Warcraft: Orcs & Humans, the game was met with positive reviews and won most of the major PC gaming awards in 1996. Warcraft II: Tides of Darkness is a fantasy real-time strategy computer game developed by Blizzard Entertainment and released for DOS in 1995 and Mac OS in 1996 by Blizzard's parent, Davidson & Associates.