Arrange all the falling blocks to complete and clear horizontal lines.
Use the arrow keys to move
Fast drop: ctrl or space key
Rotate clockwise: up key or X
Rotate counter-clockwise: Z
Pause game: P
Quit game: Q
Mute sound: M
Legal notice: © 2009 Tetris Holding, LLC. Tetris N-Blox developed by Paul Neave. Tetris®, N-Blox™ and the Tetris trade dress are owned by Tetris Holding, LLC.