An FPS set during the First World War FOR ONCE! And it is worth the cash!
The second reason, is that this game does not aspire to be like any other FPS out there, in the age of every game trying to copy Call of Duty or Halo, NecroVision stands on its own in creativity. The monsters are brilliantly created and the models have been made with care and precision. Zombies talk, yes that is right, you'll frequently hear them ranting about how much they scare themselves and constantly refer to the player as a "bastard" or yell "shit" when you foil their plans to shuffle some more. The living Germans also repetitively demand you "taste steel". Besides the generic enemies you'll face some strange contorted mechanical, barbed wire wrapped undead, swift vampires, undead wizards and demons!
The second reason is that the game puts in a sense of realism of the First World War, you'll be fighting in trenches, bunkers and over no mans land. Besides that, you'll also be facing gas attacks and delving into Gothic architecture such as underground catacombs and castles.
The third reason is weaponry, you are in command of First World War era weaponry (despite the anachronism of having an MP18 in 1916, it matters not, its a submachine gun) such as the British Lee Enfield SMLE, German Gewehr 98, Maxim guns and of course, the Trench gun, not to mention the game throws in entirely made up "vampire weapons", including a flamethrower. There is also a duel wield system that allows you to boast a Luger in one hand and a shovel in the other, this allows for a nice variation in how you dispose of hundreds of shuffling zombies.
The game has a few drawbacks however, one such is the main character, he talks too much and the more obvious fact that he is a stereotypical **** yeah" American in the British Army. It doesn't spoil the game at all (nor am I some sort of xenophobe!), but it begs the question "can game developers not fathom the very idea of having a different type of hero?", it irritates me that they feel the need to do this to appeal to an American audience. As I said it doesn't ruin the game, but it ruins the history a bit. I personally believe the story could be better if you were to take up the role as a low-ranking British or French soldier caught up in horrors far worse than those of trench warfare. However the main character, a Simon Bukner can be funny at times and his "Americaness" is perfect for some of the events that occur.
Another drawback are a few clipping issues, bodies can prevent you from moving over them, stairs are a chore to climb and other parts of the environment act as a barrier when they shouldn't. Saying that however, so far I have not encountered any glitches so far and the game has flowed well.
Another issue is the repetitiveness once you reach the later chapters, the game throws the same enemies (and too many of the big ones) and same environments that make it a chore just to finish. Alongside this, the game is relatively easy to begin with, but later in the game it becomes near impossible. This sudden difficulty imbalance is a right pain in the arse but is also a good challenge, suddenly you're not fighting easy to kill zombies or AI deficient German soldiers, but are facing demons and vampires that will push you to the limits of game rage (and your computer)!
There is more to it but I am getting bored of writing this (my apologies!), but my recommendation is to pick this one up, it should be going quite cheap wherever you may be and is a good, long game (for an FPS) to enjoy.