Get the Universal gui

local library = loadstring(game:HttpGet(('https://raw.githubusercontent.com/AikaV3rm/UiLib/master/Lib.lua')))()

local w = library:CreateWindow("Universal Gui by ZeroFire#0340") -- Creates the window

local b = w:CreateFolder("Functions") -- Creates the folder(U will put here your buttons,etc)

b:Button("Return everything back to normal",function()
game.Workspace.Gravity = 196.2

wait(0.1)

game.Players.LocalPlayer.Character.Head:Destroy()

end)

b:Button("Marble fly",function()
local UserInputService = game:GetService("UserInputService")
local RunService = game:GetService("RunService")
local Camera = workspace.CurrentCamera

local SPEED_MULTIPLIER = 16
local JUMP_POWER = 0
local JUMP_GAP = 0

local character = game.Players.LocalPlayer.Character

for i,v in ipairs(character:GetDescendants()) do
   if v:IsA("BasePart") then
       v.CanCollide = false
   end
end

local ball = character.HumanoidRootPart
ball.Shape = Enum.PartType.Ball
ball.Size = Vector3.new(5,5,5)
local humanoid = character:WaitForChild("Humanoid")
local params = RaycastParams.new()
params.FilterType = Enum.RaycastFilterType.Blacklist
params.FilterDescendantsInstances = {character}

local tc = RunService.RenderStepped:Connect(function(delta)
   ball.CanCollide = true
   humanoid.PlatformStand = true
if UserInputService:GetFocusedTextBox() then return end
if UserInputService:IsKeyDown("W") then
ball.RotVelocity -= Camera.CFrame.RightVector * delta * SPEED_MULTIPLIER
end
if UserInputService:IsKeyDown("A") then
ball.RotVelocity -= Camera.CFrame.LookVector * delta * SPEED_MULTIPLIER
end
if UserInputService:IsKeyDown("S") then
ball.RotVelocity += Camera.CFrame.RightVector * delta * SPEED_MULTIPLIER
end
if UserInputService:IsKeyDown("D") then
ball.RotVelocity += Camera.CFrame.LookVector * delta * SPEED_MULTIPLIER
end
--ball.RotVelocity = ball.RotVelocity - Vector3.new(0,ball.RotVelocity.Y/50,0)
end)

UserInputService.JumpRequest:Connect(function()
local result = workspace:Raycast(
ball.Position,
Vector3.new(
0,
-((ball.Size.Y/2)+JUMP_GAP),
0
),
params
)
if result then
ball.Velocity = ball.Velocity + Vector3.new(0,JUMP_POWER,0)
end
end)

Camera.CameraSubject = ball
humanoid.Died:Connect(function() tc:Disconnect() end)

wait(1)

game.Workspace.Gravity = 0.3
    
end)

b:Slider("Walkspeed",{

    min = 8; -- min value of the slider
    max = 100; -- max value of the slider
    precise = true; -- max 2 decimals
},function(value)
    game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = (value)
end)

b:Slider("Gravity",{

    min = 0; -- min value of the slider
    max = 196.2; -- max value of the slider
    precise = true; -- max 2 decimals
},function(value)
game.Workspace.Gravity = (value)
end)

b:Slider("Jumppower",{

    min = 50; -- min value of the slider
    max = 500; -- max value of the slider
    precise = true; -- max 2 decimals
},function(value)
game.Players.LocalPlayer.Character.Humanoid.JumpPower = (value)
end)

b:DestroyGui()