Tetris Online. Alien Bio Lab. Original variant of the Tetris game. At the top, groups of different pieces will appear. Use the ARROW keys to move the pieces from right to left and cause them to fall. You must chain 3 or more equal figures forming a horizontal, vertical or diagonal line. Each group of figures that you manage to eliminate will generate a new figure and will free up space on the board, which will facilitate the placement of the new pieces that are generated. 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.