How Do You Make An Intro For A Game, What Is The Script?

I Want To Make A Intro For A Game Like It Says My Game Etc.

What you would do is make a GUI, that says "Welcome to my game!"

game.Players.PlayerAdded:connect(function(plr)
Model=game.Workspace.IntroGui
ModelCopy=Model:Clone()
ModelCopy.Parent=plr.PlayerGui
wait(15)
plr.PlayerGui.IntroGui:Destroy()

Basically all you have to do is make the GUI, name it IntroGui, then put it into workspace.