Publisher Phantom EFX escapes the confines of its traditional gambling and card titles to bring gamers Darkest of Days, an ambitious first-person shooter that sends players hurtling through time to reverse the course of history. A mysterious organization saves the protagonist just moments before he dies, but he must repay them by traveling back in time to alter the course of events during some of humanity's most infamous moments. This Quantum Leap-style mechanic sends gamers off to five different time periods, including the eruption of Mt. Vesuvius at Pompeii, the Battle of Antietam during the U.S. Civil War, and the WWI Battle of Tannenburg. Time travel is never clean, however, so players have to make several return visits to each time period, often fighting on the opposite side of the conflict in order to correct unfortunate battlefield mistakes. Gamers can use a combination of futuristic and historical weapons, including automatic rifles, poison gas, and pulse cannons, and a varied mission structure means players may have to employ stealth, artillery assaults, or sniper attacks when attempting to save humanity and discover the true goals of the mysterious organization.