Cum de a genera zgomot perlin în pygame?

Eu sunt încercarea de a face un joc de supravietuire si am o problema cu zgomot perlin. Programul meu dă-mi asta:

Dar vreau ceva de genul insule sau râuri.

Aici e codul meu:

#SetUp#
import pygame, sys, random
pygame.init()
win = pygame.display.set_mode((800, 600))
pygame.display.set_caption('Isom')
x = 0
y = 0
s = 0
tilel = list()
random.seed(5843)
MAP = [random.randint(0, 1) for _ in range(192)]

#Tiles#
class tile():
    grass = pygame.image.load('Sprites/Images/Grass.png')
    water = pygame.image.load('Sprites/Images/Water.png')

#Loop#
while True:
    for key in pygame.event.get():
        if key.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
    #World#
    for a in range(12):
        for b in range(16):
            if MAP[s] == 0:
                win.blit((tile.grass), (x, y))
            elif MAP[s] == 1:
                win.blit((tile.water), (x, y))
            x += 50
            s += 1
        x = 0
        y += 50
    x = 0
    y = 0
    s = 0
    #Update#
    pygame.display.update()