ancho =500
alto =500
import random
import pygame
import sys
from pygame.locals import *
ventana = pygame.display.set_mode((ancho, alto))
pygame.display.set_caption("marcos game !")
r =random.randint(0,255)
g =random.randint(0,255)
b =random.randint(0,255)

ar = 5
iz = 5
al = 200
an = 200
for variable in range (50000):
	ar =ar+5
	iz =iz+5
	al =al-5 	
	an =an-5
	pygame.draw.rect(ventana,(r,g,b),(iz,ar,an,al))
	pygame.display.flip()
	
#bucle eventos
while True:
	for event in pygame.event.get():
		if event.type == QUIT:
			pygame.quit()
			sys.exit()

cuadrado  con cuadrado

Python