I need this for my game. Is it possible to make a script that forces every player in the game to go first person?
If you wanted it as such it happens upon an event, ROBLOX has a neat feature where you can use LockFirstPerson.
An example would be:
game.Players.PlayerAdded:Connect(function(Player) Player.CameraMode = Enum.CameraMode.LockFirstPerson end)
Sources: https://developer.roblox.com/en-us/api-reference/property/Player/CameraMode
If you have any other questions, feel free to reply to this answer and I'll try as best as possible to answer it.