The goal is to move pieces, called "tetrominos," left or right to form complete horizontal lines. When a line is completed, it disappears, and all lines above descend by one level.
The fall speed of the tetrominos increases every 130 points in a standard game.
The game ends when the tetrominos stack up to the top of the screen and no new tetromino can appear.
You can compare your score with your friends via the leaderboard system. Simply create a group or join one.