Are there factions in Fallout 3 that you can join and if so can you join all of them like in Skyrim? I just got the game and am talking to Vance about joining the Family.Any factions you can join? - Fallout 3 - GameFAQs THINK before you change your status with a faction! I will NOT be held accountable for YOUR bad. These include, but are not limited to not being able to complete certain quests, dialogue not working properly, and even corrupted saves. Many BAD things can happen in-game if you change your relationship with certain factions. This can be VERY dangerous if you don't know what you are doing.I also want to join Cesar - is this possible to join both? I was thinking of joining the Brotherhood of Steel because they are badass.Fallout: 10 Best Joinable Factions In The Games | …