下面是一个使用 Python 语言编写的简单版俄罗斯方块游戏代码：

import pygame

import random

# 初始化游戏

pygame.init()

# 设置游戏窗口大小

screen_width = 800

screen_height = 600

screen = pygame.display.set_mode((screen_width, screen_height))

# 设置方块大小和形状

block_size = 20

shape = [(0, 0, 1, 1), (1, 0, 1, 1), (2, 0, 1, 1), (3, 0, 1, 1)]

# 设置方块颜色

color = [(255, 255, 255), (255, 0, 0), (0, 255, 0), (0, 0, 255)]

# 定义方块类

class Block:

    def __init__(self, x, y):

        self.x = x

        self.y = y

        self.shape = random.choice(shape)

        self.color = random.choice(color)

        self.score = 0

    def draw(self):

        for i, j in enumerate(self.shape):

            pygame.draw.rect(screen, self.color[i], [self.x + j[0] * block_size, self.y + j[1] * block_size, block_size, block_size])

    def move_left(self):

        if self.x > 0:

            self.x -= block_size

    def move_right(self):

        if self.x < screen_width - block_size * len(self.shape[0]):

            self.x += block_size

    def move_down(self):

        if self.y < screen_height - block_size:

            self.y += block_size

    def fall(self):

        while self.y < screen_height - block_size:

            self.y += block_size

            if self.is_out():

                return True

            pygame.display.flip()

        return False

    def is_out(self):

        for i, j in enumerate(self.shape):

            if self.x + j[0] * block_size < 0 or self.x + j[0] * block_size >= screen_width or self.y + j[1] * block_size < 0 or self.y + j[1] * block_size >= screen_height:

                return True

            for k in range(len(shape)):

                if shape[k][0] == j[0] and shape[k][1] == j[1] and shape[k][2] == j[2] and shape[k][3] == j[3] and (i != k and (self.x + k * block_size < 0 or self.x + k * block_size >= screen_width or self.y + k * block_size < 0 or self.y + k * block_size >= screen_height)):

                    return True

        return False

    def check_score(self):

        for i in range(len(shape)):

            if shape[i][0] == self.shape[i][0] and shape[i][1] == self.shape[i][1] and shape[i][2] == self.shape[i][2] and shape[i][3] == self.shape[i][3]:

                if self.x + i * block_size == screen_width - block_size * len(shape[0]) or self.y == screen_height - block_size:

                    return True

        return False