ReplicatedFirst

A container whose contents are replicated to all clients (but not back to the server) first before anything else.

What is ReplicatedFirst for?

ReplicatedFirst is most commonly used to store LocalScripts and other objects that are essential for the game's start. As the contents of ReplicatedFirst replicate to the client before anything else in the game, it is ideal for creating loading GUIs or tutorials.

For objects that do not need to be replicated first, developers should use the ReplicatedStorage container instead.

How can I use ReplicatedFirst?

LocalScripts placed within ReplicatedFirst will run. This means code for custom loading screens or other ReplicatedFirst uses can be ran at the earliest possible point.

There a number of key considerations developers need to remember when running LocalScripts in ReplicatedFirst.

• Its contents replicate before anything else in the game, meaning LocalScripts running in ReplicatedFirst will need to wait for any objects they require to replicate using Instance:WaitForChild()
• Any objects that are to be used by a LocalScript in ReplicatedFirst should also be parented to ReplicatedFirst. Otherwise, they may replicate to the client late, yielding the script and negating the benefit of ReplicatedFirst.

ReplicatedFirst also includes the function ReplicatedFirst:RemoveDefaultLoadingScreen(), which can be used to immediately remove the default Roblox loading screen. Note if any object has been placed in ReplicatedFirst, the default loading screen will remove after 5 seconds regardless if this function has been called or not.

local Players = game:GetService("Players")
local ReplicatedFirst = game:GetService("ReplicatedFirst")

local player = Players.LocalPlayer
local playerGui = player:WaitForChild("PlayerGui")

-- Create a basic loading screen
local screenGui = Instance.new("ScreenGui")
screenGui.IgnoreGuiInset = true

local textLabel = Instance.new("TextLabel")
textLabel.Size = UDim2.new(1, 0, 1, 0)
textLabel.BackgroundColor3 = Color3.fromRGB(0, 20, 40)
textLabel.Font = Enum.Font.GothamSemibold
textLabel.TextColor3 = Color3.new(0.8, 0.8, 0.8)
textLabel.Text = "Loading"
textLabel.TextSize = 28
textLabel.Parent = screenGui

-- Parent entire screen GUI to player GUI
screenGui.Parent = playerGui

-- Remove the default loading screen
ReplicatedFirst:RemoveDefaultLoadingScreen()

--wait(3)  -- Optionally force screen to appear for a minimum number of seconds
if not game:IsLoaded() then
	game.Loaded:Wait()
end
screenGui:Destroy()