This is perhaps one of the most challenging versions of tetris you've ever played, as you have to control three falling blocks simultaneously! Same as the original tetris, your goal in this game is to move and rotate the descending blocks so that they can form a complete row and be destroyed. Before the game starts, you are allowed to set the starting level and the number of game piles. Choose a level between 1 to 20 and the number of game piles from 1 to 3 by clicking the up and down arrow buttons shown on the right of the screen. After you have completed the settings, click the Start button at the bottom to begin the game. Then you will be given your chosen number of piles, and a block will move downward in each of the piles.