In Game Script, it's occasionally making two maps?

It randomly selects one, and brings the one to workspace, on the first round there is always two maps, and the next rounds, there is occasionally one, or two.

function getRandomMap()
    local gameMaps = game.Lighting.Maps:GetChildren()
    local randomMap = gameMaps[math.random(1, #gameMaps)]
    return randomMap
end

function reshuffleteams(teams)

local players = game.Players:GetPlayers()
local t = true
for i = 1,#players do
        if t == true then
        players[i].TeamColor = game.Teams[teams[1]].TeamColor
        else
        players[i].TeamColor = game.Teams[teams[2]].TeamColor
        end
        t = not t
    end
end


function respawnnoobs()
    local P = game.Players:GetPlayers() 
    for i = 1,#P do
        P[i]:LoadCharacter()
    end

end

function startGame()
    if game.Players.NumPlayers >= 2 then
    gameStarted = true
    Workspace.RedTeam.Value = 1
    Workspace.BlueTeam.Value = 1
    local gameMap = getRandomMap()
    wait(3)
    local mapClone = gameMap:clone()
    mapClone.Parent = workspace
    mapClone.Name = "Map"
    reshuffleteams({"Goodish","Evilish"})
    respawnnoobs()
    timer = 0
    repeat wait(1)
        timer = timer+1
    until
    Workspace.BlueTeam.Value==0 or Workspace.RedTeam.Value==0 or timer==45

    if Workspace.BlueTeam.Value==0 then
h=Instance.new("Message", Workspace)
h.Text="RedTeam has won! Awarding Points.."


    elseif
         Workspace.RedTeam.Value==0 then
h=Instance.new("Message", Workspace)
h.Text="BlueTeam has won! Awarding Points.."


    else
         h=Instance.new("Message", Workspace)
h.Text="Timer has run out! Tie. No Points Awarded. D:"


    end
    wait(3)
    workspace:FindFirstChild("Map"):Destroy()
    reshuffleteams({"Lobby","Lobby"})
    respawnnoobs()
    workspace:FindFirstChild("Message"):Destroy()
    wait(30) ------------(intermission)
    startGame()
    else
    gameStarted = false

    end
    end




game.Players.PlayerAdded:connect(function()
    wait(10)
if game.Players.NumPlayers<2 and gameStarted == false then
h=Instance.new("Message", Workspace)
h.Text="Need more then 2 players to start"
game:GetService("Debris"):AddItem(h, 5) --Remove the message after 5 seconds.
elseif game.Players.NumPlayers >= 2 then
startGame()
end
end)

Why does it make two once in a while? Also any general improvement I could make to this script?