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

local blackFrame = Instance.new("Frame")
blackFrame.Size = UDim2.new(1, 0, 1, 0)
blackFrame.Position = UDim2.new(0, 0, 0, 0)
blackFrame.BackgroundColor3 = Color3.new(0, 0, 0)
blackFrame.BorderSizePixel = 0
blackFrame.Visible = false
blackFrame.ZIndex = 10
blackFrame.Parent = playerGui

mouse.Button1Down:Connect(function()
    blackFrame.Visible = true
end)