Lessons, quizzes and missions that run your code in a simulated Roblox server, from your first print to RemoteEvents, DataStores, GUIs and OOP. Every mission checks your script and tells you what went wrong in plain words.
A cheat sheet of everything the Luau Quest server understands. It uses real Roblox names and error messages, so what you learn here works in Studio. Press Run on any example.
local name: string = "Noob"
local coins = 10
coins += 5
print(`{name} has {coins}`, type(coins), #name)
print(10 // 3, 10 % 3, 2 ^ 4, math.clamp(150, 0, 100))if a then ... elseif b then ... else ... end
local label = if hp > 50 then "ok" else "hurt"
for i = 10, 1, -1 do ... end
for key, value in someTable do ... end
while cond do ... end repeat ... until cond
break continuelocal function add(a: number, b: number): number return a + b end
local list = {"a"} table.insert(list, "b") table.remove(list, 1)
table.sort(list, function(x, y) return x > y end)
table.concat(list, ", ") table.find(list, "b") table.clone(t)
("a,b"):split(",") s:upper() s:sub(1, 3) s:match("%d+")
string.format("%02d:%02d", m, s) pcall(fn) error("msg", 0)local Pet = {}
Pet.__index = Pet
function Pet.new(name) return setmetatable({Name = name}, Pet) end
function Pet:Speak() return self.Name .. " says hi" endlocal p = Instance.new("Part")
p.Size = Vector3.new(4, 1, 2)
p.Position = Vector3.new(0, 5, 0)
p.Color = Color3.fromRGB(255, 0, 0)
p.Anchored = true
p.Material = Enum.Material.Neon
p:SetAttribute("Points", 10)
p:AddTag("Coin")
p.Parent = workspace
print(workspace:FindFirstChild("Part"), #workspace:GetChildren())part.Touched:Connect(function(hit) end)
clickDetector.MouseClick:Connect(function(player) end)
prompt.Triggered:Connect(function(player) end)
Players.PlayerAdded:Connect(function(player) end)
value.Changed:Connect(function(new) end) conn:Disconnect()
task.wait(1) task.spawn(fn) task.delay(2, fn)
RunService.Heartbeat:Connect(function(dt) end)
TweenService:Create(part, TweenInfo.new(2), {Position = v}):Play()-- LocalScript -- Script
remote:FireServer(data) remote.OnServerEvent:Connect(function(player, data) end)
remote.OnClientEvent:Connect(f) remote:FireClient(player, data) / :FireAllClients(data)
fn:InvokeServer(x) fn.OnServerInvoke = function(player, x) return y end
local M = require(game.ReplicatedStorage.Module)
local store = DataStoreService:GetDataStore("Data")
pcall(function() return store:GetAsync(key) end)local gui = Instance.new("ScreenGui")
label.Size = UDim2.fromOffset(200, 50) UDim2.fromScale(0.5, 1)
frame.AnchorPoint = Vector2.new(0.5, 0.5)
button.MouseButton1Click:Connect(fn) box.FocusLost:Connect(function(enter) end)
gui.Parent = player:WaitForChild("PlayerGui")Real games have real players. Here you fake them. These don't exist in Roblox Studio.
local player = Simulate.join("Builderman") -- joins, gets a character, runs LocalScripts
Simulate.touch(part, player.Character["Left Leg"])
Simulate.click(workspace.Button, player) -- ClickDetector part or a GUI button
Simulate.prompt(workspace.Chest, player) -- ProximityPrompt
Simulate.type(textBox, "hello") -- type into a TextBox and press Enter
Simulate.fireServer(remote, player, ...) -- pretend to be a (maybe cheating) client
Simulate.giveGamePass(player, passId) Simulate.buyProduct(player, productId)
Simulate.failDataStores(true) Simulate.leave(player) Simulate.move(player, Vector3.new(0, 3, 0))