How do I clear lines in Tetris?
Fill an entire horizontal row with blocks to make that line disappear and clear space.

Classic Arcade
Tetris is one of the most recognizable evergreen puzzle experiences in gaming. Tetris is the legendary block-stacking puzzle game. Different shaped blocks, known as Tetriminos, fall from the top of the screen into a well. Players must rotate and move these pieces to create solid horizontal lines. When a line is completely filled with blocks, it disappears, and the player earns points. The game ends if the pieces stack up to the top of the screen. As you progress, the pieces fall faster, demanding quick thinking and precise placement. Tap play to open the full game. Once you start, the interactive board and controls will appear immediately below.
Fill an entire horizontal row with blocks to make that line disappear and clear space.
They are the geometric shapes made of four square blocks that you manipulate during the game.
You lose if the stack of blocks reaches the very top of the playing field, leaving no room for new pieces.
Most versions show a Next window that displays the upcoming block to help you plan your moves.