Half-Life 2: Episode Two is a first-person shooter video game, the second episode in a series of sequels to the 2004 Half-Life 2. It was developed by Valve Corporation in tandem with Episode One, the first game in the series, and released in 2007 via Valve's Steam content distribution platform. The episode was released both separately and as a part of a bundled package, The Orange Box.
Episode Two gameplay consists of expansive environments, travel and reduced linear play, continuing Valve's policy of orienting each episode around a particular theme or set of technologies. Following the closing events of Episode One, it sees Gordon Freeman and the series' other major characters moving away from City 17 to the surrounding countryside.
The retail version was released on October 10, 2007, in North America and Russia for Windows and Microsoft's Xbox 360 after repeated delays. The version for the PlayStation 3 was to be released "around two or three weeks later," as it was produced separately at the Electronic Arts UK studio, according to Valve marketing director Doug Lombardi. This version was further delayed. For the rest of the world, the release date was October 18. The Steam version was released worldwide on October 10, 200