Instance Logger (Universal Script/Open Source)

-- Services
local Players = game:GetService("Players")
local CoreGui = game:GetService("CoreGui")

-- Variables
local player = Players.LocalPlayer
local mouse = player:GetMouse()
local selectedInstance = nil
local isSelecting = false
local connection = nil

-- UI Setup
local ScreenGui = Instance.new("ScreenGui")
ScreenGui.Name = "InstanceLoggerUI"
ScreenGui.ResetOnSpawn = false
-- Fallback to PlayerGui if CoreGui is restricted
local success, err = pcall(function() ScreenGui.Parent = CoreGui end)
if not success then ScreenGui.Parent = player:WaitForChild("PlayerGui") end

local MainFrame = Instance.new("Frame")
MainFrame.Name = "MainFrame"
MainFrame.Parent = ScreenGui
MainFrame.BackgroundColor3 = Color3.fromRGB(25, 25, 25)
MainFrame.Position = UDim2.new(1, -320, 1, -320)
MainFrame.Size = UDim2.new(0, 300, 0, 300)
MainFrame.Active = true
MainFrame.Draggable = true -- Allows dragging the UI around

local UICorner = Instance.new("UICorner")
UICorner.CornerRadius = UDim.new(0, 8)
UICorner.Parent = MainFrame

local TitleLabel = Instance.new("TextLabel")
TitleLabel.Parent = MainFrame
TitleLabel.BackgroundTransparency = 1
TitleLabel.Size = UDim2.new(1, 0, 0, 40)
TitleLabel.Font = Enum.Font.GothamBold
TitleLabel.Text = "  Instance Logger"
TitleLabel.TextColor3 = Color3.fromRGB(255, 255, 255)
TitleLabel.TextSize = 18