Services

GetService

game:GetService(name: string): Instance | table | nil

Case-insensitive redirects to fakes:

Otherwise first DataModel child with matching ClassName or Name.

Also available as globals: RunService, UserInputService, TweenService, HttpService.

RunService.Heartbeat       -- Signal(dt)
RunService.RenderStepped   -- same tick kind as Heartbeat
RunService.Stepped         -- same

Connect / Once / Wait / Fire — Signals.

UserInputService.InputBegan  -- Signal(input, gameProcessed)
UserInputService.InputEnded

Key polling subset (letters, mouse buttons, arrows, modifiers). Not full Roblox UIS. Input shape: Signals.

local tw = TweenService:Create(instance, tweenInfo, props)
tw:Play()
tw:Cancel()
tw:Pause()
tw:Destroy()
tw.Completed  -- Signal, never fires

No-op. Exists so scripts that call Create/Play do not error.

See HTTP.