original description: 俄羅斯方塊,一款大家都熟悉的遊戲空白鍵為置換方塊形狀按鈕,↑↓←→鍵為調整方塊降落位置 translated: Tetris, a familiar game that everyone is familiar with, the blank button is to replace the cube-shaped button, and the ↑↓←→ button is to adjust the landing position of the cube