how to make a teleporter to a game that only works if you teleported to it from another game?

I am making a game with chapters

game.Players.PlayerAdded:Connect(function(player)
	wait(4)
	local game = instance.new(folder, player)
	game.Name = "Game_Come"
	local game_coming_from = instance.new(IntValue, game)
	game_coming_from.Name = "" -- Place coming from
	game_coming_from.Value = 0 -- *place coming from PLACE id
end)

if game.Players.LocalPlayer.Game_Come.Value == 0  then  -- Place 1 id
	 -- code what ever you want it to do
end else
	 -- if they did not come from that game
end