Tetris
Clearing lines give points. A player gets more points if they clear more than one line with one tetromino. Clearing one line is called a "single", two lines a "double", three lines a "triple", and four lines a "Tetris". Clearing two Tetrises in a row is called a Back-to-Back Tetris. The player can also turn a T-shaped Tetrimino into a T-shaped hole before it finishes falling to get more points. This move is called a "T-Spin".