Play Tetris Online: A Guide to Fun and Competitive Gaming

Go to an online Tetris website. A few popular ones are 'Tetris Friends', 'Tetris Battle', and 'Tetris Zone'.

Create an account or log in if you already have one.

Choose a game mode. Most online Tetris sites offer a variety of game modes, including 'classic', 'marathon', 'ultra', and more.

Start playing. Use the arrow keys to move and rotate the blocks as they fall. Try to complete lines and score as many points as possible.

Play against other players. Most online Tetris sites offer multiplayer options, so you can compete against other players.