Tetris Online. Jewel Blocks. Adaptation of the Tetris game where there are several geometric figures of different shape, color and position, each composed of 1 or more square blocks. These figures will be generated 3 by 3 at the bottom of the screen and with the mouse you must place them on the game board. Each horizontal line that you manage to complete will disappear, freeing up space to place new pieces but without altering the position of the others. This original game of Tetris ends when there is no space available to place the pieces that are generated. Accumulate points by keeping the Tetris game active.