How do you determine which faction would give you the best or worst experience? Well, you have to get to know all four factions and their convictions. As a hint and spoiler, one faction's path will end in a more ideal state than the others but all paths will end with only two of the factions surviving. Your choice will pave the way for one faction to best another, whether by faithfully doing your duty as a member or fulfilling your own agenda. As mentioned above, each of these factions has its own set of beliefs that it strongly adheres to, so that means there are conflicts among them. The factions are: The Minutemen, The Brothers of Steel, The Railroad and The Institute. When you play Fallout 4, you will be given the choice to side with one of the four available factions and each of those groups have their own 'jobs' to complete.