Tetris Game board dimensions 10 x 18 blocks Matrix with zeroes, filled with each tetromino block accordingly Tetrominos I-block 1 1 1 1 J-block 2 2 2 2 L-block 3 3 3 3 O-block 4 4 4 4 S-block 5 5 5 5 T-block 6 6 6 6 Z-block 7 7 7 7