Hi,i have a script that doesent work, can u help me?

when i play it, it keeps showing me Game Starting In , why? it doesnt continue?

 local black = script.Parent.Parent.Parent.Blk
 local platforms = {'Black','Blue','Green'}
 local blue = script.Parent.Parent.Parent.Blu
 local green = script.Parent.Parent.Parent.G

local choosenplatform = 'Nope'

while true do
    local game = Instance.new('Hint')
    game.Parent = script
    for i = 120,0, -1 do
    game.Text = 'Game Starting In: '
    wait(1)
    end
   game.Text = 'Get Ready'
   wait(5)
   game.Text = ''..choosenplatform[math.random(1,#platforms)]
   wait(4)
   if choosenplatform == 'Black' then
    blue.Transparency = 1
    blue.CanCollide = false

    green.Transparency = 1
    green.CanCollide = false



    wait(10)

    blue.Transparency = 0
    blue.CanCollide = true

    green.Transparency = 0
    green.CanCollide = true


end
game.Text = 'Get Ready'
wait(5)
game.Text = ''..choosenplatform[math.random(1,#platforms)]
wait(4)
if choosenplatform == 'Blue' then
    black.Transparency = 1
    black.CanCollide = false

    green.Transparency = 1
    green.CanCollide = false



    wait(10)

    black.Transparency = 0
    black.CanCollide = true

    green.Transparency = 0
    green.CanCollide = true


end
game.Text = 'Get Ready'
wait(5)
game.Text = ''..choosenplatform[math.random(1,#platforms)]
wait(4)
if choosenplatform == 'Green' then
    black.Transparency = 1
    black.CanCollide = false

    blue.Transparency = 1
    blue.CanCollide = false


    wait(10)

    black.Transparency = 0
    black.CanCollide = true

    blue.Transparency = 0
    blue.CanCollide = true


end

end