"Block Tetris Christmas" is a holiday-themed twist on the classic block Tetris game. Use the left, right, and down keys to move the blocks, and the up key to rotate them. Alternatively, you can tap or click buttons to perform the same actions. Your goal is to fit the blocks together to create complete rows. Plus, there are four exciting power-ups to take your excitement to the next level. Get into the festive spirit and enjoy some block-dropping fun!