Tetris Online. Poly Blocks. Choose board size and level of difficulty. In the game of Tetris there are 7 geometric figures of different shape and color, each composed of four square blocks. These figures will be generated in the upper part of the screen and will descend little by little through the game board. You will have to decide the way in which each piece falls by rotating it on itself and the place where it is finally deposited, moving it to the right or left of the game board. Each horizontal line that is completed disappears and the pieces that are on top will descend one position. In this way, space will be freed on the board, which will facilitate the placement of the new pieces that are generated. The rate of falling of the pieces will accelerate as the game progresses. The game of Tetris ends when the pieces are stacked on top of each other to prevent the generation of new ones. Accumulate points by keeping the Tetris game active.