Plot: The Orange Box is a video game compilation containing five games developed by Valve. Two of the games included, Half-Life 2 and its first stand-alone expansion, Episode One, had previously been released as separate products. Wikipedia
Plot: Half-Life 2: Episode One is a 2006 first-person shooter game developed and published by Valve. Like previous Half-Life games, it combines shooting, puzzle-solving, and narrative. Players control scientist Gordon Freeman, who, alongside his companion Alyx Vance, must escape City 17 before an explosion...
Plot: Half-Life 2: Episode Two is a 2007 first-person shooter game developed and published by Valve. Following Episode One, it was the second in a planned trilogy of shorter episodic games that continue the story of Half-Life 2. Wikipedia
Plot: Half-Life 2: Lost Coast is an additional level for the 2004 first-person shooter video game Half-Life 2. Developed by Valve, it was released on October 27, 2005, through the Steam content delivery service as a free download to owners of the Windows version of Half-Life 2. Wikipedia
Plot: Team Fortress 2 is a multiplayer first-person shooter game developed and published by Valve. It is the sequel to the 1996 Team Fortress mod for Quake and its 1999 remake, Team Fortress Classic. It was released in October 2007 as part of The Orange Box video game bundle for Windows and Xbox 360. Wikipedia...
Plot: Half-Life 2: Survivor is an arcade game based on Half-Life 2. It was released on June 28, 2006, on Taito's Type X+ arcade system, with a 32 widescreen high definition LCD running at 1360x768 resolution.
Plot: Dark Void is a video game developed by Airtight Games using the Unreal Engine 3 and published by Capcom for the PlayStation 3, Xbox 360 and Microsoft Windows. In the game, players must face an alien threat that humanity had previously banished. The game mixes on-foot and mid-air combat. Wikipedia
Plot: Half-Life 2 is a 2004 first-person shooter game developed and published by Valve. Like the original Half-Life, it combines shooting, puzzles, and storytelling, and adds features such as vehicles and physics-based gameplay. Wikipedia