I have created a block game!

Block Game.py

import pygame
import random
import sys

pygame.init()

text = "Game Over"

HEIGHT = 600
WIDTH = 800

P_C = (255,255,0)
E_C = (0,0,238)
BACKGROUND_COLOR = (0,0,0)


player_size = 50
player_pos = [WIDTH/2, HEIGHT-2*player_size]

enemy_size = 50
enemy_pos = [random.randint(0,WIDTH-enemy_size), 0]
enemy_list = [enemy_pos]

SPEED = 10

screen = pygame.display.set_mode((WIDTH, HEIGHT))



game_over = False

score = 0

clock = pygame.time.Clock()

# Game Title
pygame.display.set_caption("Block Dodge")
pygame.display.update()
clock = pygame.time.Clock()
font = pygame.font.SysFont (None, 55)



def drop_enemies(enemy_list):
    delay = random.random()
    if len(enemy_list) < 10 and delay < 0.1:
        x_pos = random.randint(0, WIDTH-enemy_size)
        y_pos = 0
        enemy_list.append([x_pos, y_pos])

def draw_enemies(enemy_list):
    for enemy_pos in enemy_list:
        pygame.draw.rect(screen, E_C, (enemy_pos[0], enemy_pos[1], enemy_size, enemy_size))

def update_enemy_positions(enemy_list, score):
    for idx, enemy_pos in enumerate(enemy_list):
        if enemy_pos[1] >= 0 and enemy_pos[1] < HEIGHT:
            enemy_pos[1] += SPEED
        else:
            enemy_list.pop(idx)
            score += 1

def collision_check(enemy_list, player_pos):
    for enemy_pos in enemy_list:
        if detect_collision(enemy_pos, player_pos):
            return True
        return False


def detect_collision(player_pos, enemy_pos):
    p_x = player_pos[0]
    p_y = player_pos[1]

    e_x = enemy_pos[0]
    e_y = enemy_pos[1]

    if (e_x >= p_x and e_x < (p_x + player_size)) or (p_x >= e_x and p_x < (e_x+enemy_size)):
        if (e_y >= p_y and e_y < (p_y + player_size)) or (p_y >= e_y and p_y < (e_y + enemy_size)):
            return True
        return False


while not game_over:

    for event in pygame.event.get():

        if event.type == pygame.QUIT:
            sys.exit()


        if event.type == pygame.KEYDOWN:
            x = player_pos[0]
            y = player_pos[1]

            if event.key == pygame.K_LEFT:
                x -= player_size
            elif event.key == pygame.K_RIGHT:
                x += player_size

            player_pos = [x,y]




    screen.fill(BACKGROUND_COLOR)


    if detect_collision(player_pos, enemy_pos):
        game_over = True


    drop_enemies(enemy_list)
    update_enemy_positions(enemy_list, score)


    if collision_check(enemy_list, player_pos):
        game_over = True
        #print("Game Over")
        print(text)


    draw_enemies(enemy_list)
    pygame.draw.rect(screen, P_C, (player_pos[0], player_pos[1], player_size, player_size))

    clock.tick(30)

    pygame.display.update()