Smosh: There are a lot of really great first person shooters, but not all of them are revolutionary. Most of them try to be fun, but don't have a lot of ambition past that. There are those certain games that change the way people think about gaming. They take the genre and revolutionize it so much that every game after it is affected by it. In other words, these are the games that everyone ripped off. Here are the most influential first person shooters.