With the success of the Zombie Army series of DLC as well as the Zombie Army Trilogy game; Rebellion has released the next chapter in the series with Zombie Army 4: Dead War. In a new review; Skewed and Reviewed talks about the numerous new features in the game and how the game plays as a complete game instead of DLC.
Source: N4G PC Zombie Army 4: Dead War – Skewed 'n Reviewed