Darkest of Days is an FPS from 8Monkey Studios, published by Phantom EFX. The game is seperated from the average FPS game by using mainly the Civil War and World War 1 and its settings, two time periods not often depicted in action video games. Sometimes you will use period weapons which are slow and cumbersome, and then you will be granted a modern day weapon with which to cause havoc, which always feels very satisfying.