It was released on Steam on August 24, 2005.Īs with Gearbox's previous expansion pack, Opposing Force (1999), Blue Shift returns to the setting and events of Half-Life, but portrays the story through the eyes of another character. Although the Dreamcast port was cancelled, the Windows version was released as a standalone product on Jfor Windows. Blue Shift was the second expansion for Half-Life, originally intended as part of a Dreamcast port of Half-Life. It was developed by Gearbox Software with Valve and published by Sierra On-Line. Half-Life: Blue Shift is an expansion pack for the first-person shooter video game Half-Life (1998).