Left 4 Dead 2 is a cooperative first-person shooter video game, the sequel to Valve Corporation's Left 4 Dead. The game launched on November 17, 2009, for Microsoft Windows and Xbox 360 in the United States and November 20 in Europe.
Penumbra: Overture is the first in a series of episodicsurvival horror gamesdeveloped by Frictional Games. It was originally intended as the first episode of a trilogy. With the announcement of the second episode, Penumbra: Black Plague, it was stated that the second game would be the final chapter.However, an expansion has been released since then: Penumbra: Requiem, technically giving the series a third chapter.