You bring down blocks from the top of the screen. You can move the blocks around, either left to right and you can rotate and mirror them. You have to build the box to fill the rows to remove the completed line. You can make them fall faster if you’re sure of your positioning. And collect the score. Tetris 3D, 3D Tetris, online Tetris, puzzle game, HTML5 Tetris, block stacking game, game for kids, retro game, classic puzzle, score game, free online game, keyboard controls, mouse controls, mobile game, educational game, brain training, problem solving, strategy game