Ending the Program

[DT2000]

You can use a messagebox to promto for a Yes or No response if you are going to design this to run in a GUI.
Example:

import tkinter as tk
from tkinter import Label
from tkinter import Button
from tkinter import messagebox

root = tk.Tk()
root.geometry('300x300')

label=Label(root, text= 'Your gamre application is running')
label.pack()

def popup():
    your_popup = messagebox.askyesno('Your Game Name','Do you want to continue?')
    if your_popup == True:
        return
    else:
        root.destroy()
button=Button(root, text='Press', command=popup)
button.pack()

root.mainloop()