GUIZero Countdown Timer

from time import sleep

def countdown(t):
    while t > 0:
        if t//60 == 1:
            suffix = "minute"
        else:
            suffix = "minutes"
        print(t//60, suffix, (t-(t//60)*60), "seconds")
        t -= 1
        sleep(1)

countdown(120)
print("Game Over")