Video game factions are groups or organizations within a game that often have distinct goals, beliefs, and characteristics. Players can usually choose to align with or oppose these factions, which can influence the game's storyline, missions, and character interactions. Examples of factions include the Brotherhood of Steel in the Fallout series and the Horde and Alliance in World of Warcraft. Factions can enhance gameplay by providing players with unique quests, rewards, and challenges. They often represent different ideologies or playstyles, allowing players to experience diverse narratives and gameplay mechanics. This system encourages exploration and replayability, as players may want to experience the game from multiple faction perspectives.