SpeedG - Universal Speed Changer

-- Persistent, Closable, Minimizable MoveGUI with Speed & Enable/Disable

local player = game.Players.LocalPlayer
local PlayerGui = player:FindFirstChild("PlayerGui") or player:WaitForChild("PlayerGui")

-- Remove old GUI if exists
if PlayerGui:FindFirstChild("MoveGUI") then
    PlayerGui.MoveGUI:Destroy()
end

-- Variables
local walkSpeed = 16
local enabled = true

-- Create GUI
local screenGui = Instance.new("ScreenGui")
screenGui.Name = "MoveGUI"
screenGui.ResetOnSpawn = false
screenGui.Parent = PlayerGui

-- Main Frame
local frame = Instance.new("Frame")
frame.Size = UDim2.new(0, 220, 0, 150)
frame.Position = UDim2.new(0, 20, 0, 50)
frame.BackgroundColor3 = Color3.fromRGB(30,30,30)
frame.BorderSizePixel = 0
frame.Active = true
frame.Draggable = true
frame.Parent = screenGui

-- Title
local title = Instance.new("TextLabel")
title.Size = UDim2.new(1,0,0,30)
title.BackgroundTransparency = 1
title.Text = "Walk Speed GUI"
title.TextColor3 = Color3.fromRGB(255,255,255)
title.Font = Enum.Font.SourceSansBold
title.TextSize = 18
title.Parent = frame

-- Close Button
local closeBtn = Instance.new("TextButton")
closeBtn.Size = UDim2.new(0,30,0,30)
closeBtn.Position = UDim2.new(1,-35,0,5)
closeBtn.Text = "X"
closeBtn.Font = Enum.Font.SourceSansBold
closeBtn.TextSize = 18
closeBtn.TextColor3 = Color3.fromRGB(255,255,255)
closeBtn.BackgroundColor3 = Color3.fromRGB(80,80,80)
closeBtn.Parent = frame
closeBtn.MouseButton1Click:Connect(function()
    screenGui:Destroy()
end)

-- Minimized Circle
local minimizedCircle = Instance.new("TextButton")
minimizedCircle.Size = UDim2.new(0,50,0,50)
minimizedCircle.Position = UDim2.new(0, 20,0,50)
minimizedCircle.BackgroundColor3 = Color3.fromRGB(50,50,50)
minimizedCircle.BorderSizePixel = 0
minimizedCircle.TextColor3 = Color3.fromRGB(255,255,255)
minimizedCircle.Text = "Speed"
minimizedCircle.Visible = false
minimizedCircle.Active = true
minimizedCircle.Draggable = true
minimizedCircle.Parent = screenGui

-- Minimize Button
local minimizeBtn = Instance.new("TextButton")
minimizeBtn.Size = UDim2.new(0,30,0,30)
minimizeBtn.Position = UDim2.new(1,-70,0,5)
minimizeBtn.Text = "-"
minimizeBtn.Font = Enum.Font.SourceSansBold
minimizeBtn.TextSize = 18
minimizeBtn.TextColor3 = Color3.fromRGB(255,255,255)
minimizeBtn.BackgroundColor3 = Color3.fromRGB(80,80,80)
minimizeBtn.Parent = frame

minimizeBtn.MouseButton1Click:Connect(function()
    frame.Visible = false
    minimizedCircle.Visible = true
end)

minimizedCircle.MouseButton1Click:Connect(function()
    frame.Visible = true
    minimizedCircle.Visible = false
end)

-- Enable/Disable Button
local toggleBtn = Instance.new("TextButton")
toggleBtn.Size = UDim2.new(0, 200, 0, 30)
toggleBtn.Position = UDim2.new(0,10,0,40)
toggleBtn.Text = "Disable"
toggleBtn.Font = Enum.Font.SourceSans
toggleBtn.TextSize = 16
toggleBtn.TextColor3 = Color3.fromRGB(255,255,255)
toggleBtn.BackgroundColor3 = Color3.fromRGB(50,50,50)
toggleBtn.Parent = frame

toggleBtn.MouseButton1Click:Connect(function()
    enabled = not enabled
    local humanoid = player.Character and player.Character:FindFirstChild("Humanoid")
    if enabled then
        toggleBtn.Text = "Disable"
        if humanoid then humanoid.WalkSpeed = walkSpeed end
    else
        toggleBtn.Text = "Enable"
        if humanoid then humanoid.WalkSpeed = 16 end
    end
end)

-- Speed Input
local speedLabel = Instance.new("TextLabel")
speedLabel.Size = UDim2.new(1,0,0,20)
speedLabel.Position = UDim2.new(0,10,0,80)
speedLabel.Text = "Set Speed (1-10000):"
speedLabel.TextColor3 = Color3.fromRGB(255,255,255)
speedLabel.BackgroundTransparency = 1
speedLabel.Font = Enum.Font.SourceSans
speedLabel.TextSize = 14
speedLabel.Parent = frame

local speedBox = Instance.new("TextBox")
speedBox.Size = UDim2.new(0, 200, 0, 25)
speedBox.Position = UDim2.new(0,10,0,100)
speedBox.Text = tostring(walkSpeed)
speedBox.ClearTextOnFocus = true
speedBox.TextColor3 = Color3.fromRGB(255,255,255)
speedBox.BackgroundColor3 = Color3.fromRGB(50,50,50)
speedBox.Parent = frame

speedBox.FocusLost:Connect(function(enter)
    local val = tonumber(speedBox.Text)
    if val then
        if val < 1 then val = 1 end
        if val > 10000 then val = 10000 end
        walkSpeed = val
        if enabled then
            local humanoid = player.Character and player.Character:FindFirstChild("Humanoid")
            if humanoid then humanoid.WalkSpeed = walkSpeed end
        end
        speedBox.Text = tostring(walkSpeed)
    end
end)

-- Apply speed on respawn
player.CharacterAdded:Connect(function(char)
    local humanoid = char:WaitForChild("Humanoid")
    if enabled then humanoid.WalkSpeed = walkSpeed end
end)