A Tetromino is a geometric shape made up of four connected squares. These shapes are commonly seen in the popular video game Tetris, where players rotate and arrange them to create complete lines. Each Tetromino can be one of several different forms, such as the straight line, square, or L-shape, and they come in various colors. In Tetris, the goal is to fit these Tetrominoes together without leaving gaps. When a complete line is formed, it disappears, allowing players to score points. Mastering the placement of Tetrominoes is key to achieving high scores and clearing levels in the game.