The player's goal is to clear the playing field by creating horizontal and vertical lines. The field is filled with blocks of different shapes and colors, which can be rotated to fit together like a puzzle.
The player can create lines by dragging and dropping the blocks into position. To get a line, the blocks must be aligned either horizontally or vertically. The player can use the entire grid to fit the blocks together, working from top to bottom.
The game runs entirely in the browser, requiring neither download nor registration. Clearing lines awards points, which help the player track their progress as they continue to play the game.