In Darkest of Days, the action begins with the player being ripped from his period in time by a mysterious organization moments before his grisly death. In order to ensure the future of mankind, he is then tasked with the mission to travel back and forth through time – to famous, turning-point battle campaigns in world history – acting as the organization’s agent in a larger, seemingly otherworldly, battle between good and evil.

Using a combination of both futuristic and historical weapons, players will be immersed in a world where in one instant they will be fighting against the Huns in World War I and the next find themselves battling at Antietam in the U.S. Civil War. A variety of combat missions, such as stealth, artillery assaults, and sniper attacks will keep players on their toes through dozens of levels spread out over five historical time periods - all while discovering the secrets of the mysterious organization for which they have been working.