A FOV slider is a feature in video games that allows players to adjust the field of view (FOV), which determines how much of the screen they can see in the game. A higher FOV means that players can see more of whats happening around them, but if the FOV is increased too much, it can cause distortion and a fish-eye effect that can make it difficult to see enemies and surroundings properly. FOV sliders are often requested by players and can be found in many first-person shooters on consoles and PC. However, some games, like Call of Duty: Warzone, did not have a FOV slider on consoles due to hardware restrictions. FOV sliders can improve the gaming experience for players, and they are often added to games through updates or mods.