Tetris is a legendary puzzle arcade game, originally designed and programmed by Russian game designer Alexey Pajitnovand. It was released on 1984 and it's one of the best classic game ever created. You can now enjoy playing it online for free at Arcade Set! The objective of the game is to place the colored blocks into horizontal lines. The more blocks you manage to place into a horizontal line simultaneously, the better your score is. Use your left and right arrow keys to move a shape left nd right. Press the down arrow key to drop the shapes faster. Use the up arrow key or Z key to rotate a shape. Press P to pause the game, Q to quit the game.