--Const
PW = 5 -- intermission break for players
wait(1)
math.randomseed(tick())
function driver()
     local GM = { -- How do I make this constant?
         "Team death match!"
        ,"Free for all!"
        ,"Vote on the next match!"
        ,"Zombies vs Survivors!"
}
    local p = GM[ math.random( #GM ) ]
    if p == GM[1] then TDM() end if p == GM[2] then FFA() end if p== GM[3] then VOTE() end if p== GM[4] then ZOMBIES() end
end

function TDM()
    print("TDM")
    waitfor(5)
end

function FFA()
    print("FFA")
    waitfor(5)
end

function VOTE()
    print("VOTE")
    waitfor(5)
end

function ZOMBIES()
    print("ZOMBIES")
    waitfor(5)
end

function waitfor(t) local a = game.Players:GetChildren()
    repeat
        for i = 1, #a do a[i].PlayerGui.TLG.Frame.Counter.Text = t t = t -1 wait(1) end
    until t < 0 end

while 1 do
driver()
wait(1)
end