Zombie Army Trilogy isn't necessarily the most memorable game, but it sure is pure dumb fun. The first two chapters of the game are kind of bland, but last chapter really improves and adds side quests and makes the game feel a bit more fleshed out. The story sucks and some of the areas where you have to fight zombies are little too compact to my own liking, but this game has just phenomenal design (I loved seeing all the occult stuff, as it's not something you often see in wwii games, despite being part of wwii Germany), pretty good soundtrack and the environments are awesome! (The portrayal of war torn areas are pretty well done and actually is one of my favorites). I played this game alone and it is 100% doable, but if you are planning on playing this game, get yourself a buddy, I promise you're going to have much better time.