It is important to understand the risks involved in using custom scripts in Roblox:
Under FE, if a player’s client says, “I have 1,000,000 coins,” the server ignores it unless the server itself recorded those earnings. This prevents classic "local only" hacking. However, —screens, buttons, health bars, and tooltips—are inherently client-side. They display information; they don’t inherently change game data.
Downloading or copying external FE GUI scripts from unverified sources poses massive security risks: roblox fe gui script
: While some are polished with smooth animations and "dark mode" aesthetics, others are poorly optimized, leading to lag or game crashes. Safety and Ethics
button.MouseButton1Click:Connect(function() remote:FireServer("sword") -- Request server to give sword end) It is important to understand the risks involved
Let's put this knowledge into practice by building a simple "Hello World" system. This classic example is the perfect way to understand the flow of an FE GUI script. You'll create a button that, when clicked, makes a server script print a message to the output.
remote.OnServerEvent:Connect(function(attacker, targetName) local target = game.Players:FindFirstChild(targetName) if target and target.Character and target.Character:FindFirstChild("Humanoid") then local dist = (attacker.Character.HumanoidRootPart.Position - target.Character.HumanoidRootPart.Position).Magnitude if dist <= 10 then target.Character.Humanoid.Health = 0 end end end) This classic example is the perfect way to
On a live server, this changes nothing for other players and will revert instantly. Never do this.
local ReplicatedStorage = game:GetService("ReplicatedStorage") local ServerStorage = game:GetService("ServerStorage") local giveItemEvent = Instance.new("RemoteEvent") giveItemEvent.Name = "GiveItemEvent" giveItemEvent.Parent = ReplicatedStorage -- Listen for the client's request giveItemEvent.OnServerEvent:Connect(function(player, itemName) -- Security Check: Ensure the item exists in storage local itemTemplate = ServerStorage:WaitForChild("Items"):FindFirstChild(itemName) if itemTemplate then -- Clone the item and place it in the player's Backpack local clonedItem = itemTemplate:Clone() clonedItem.Parent = player.Backpack print(player.Name .. " successfully received a " .. itemName) else warn("Invalid item requested by " .. player.Name) end end) Use code with caution. Critical Security: Never Trust the Client
Roblox UI development changed completely when Filtering Enabled (FE) became mandatory. In the early days of the platform, a script could change something on one player's screen or the server, and that change would automatically copy to everyone else. Today, the Roblox security model protects games by separating what the server sees from what the player sees.