Play Tetris Online: A Step-by-Step Guide

Visit an online gaming website, such as Pogo.com or Bored.com, which offer a variety of free online games.

Click on the 'Tetris' link or type 'Tetris' into the search field.

Choose the version of Tetris you want to play. Depending on the website you're using, you may have the option to choose between classic Tetris, multiplayer Tetris, and other variations.

Click 'Play' and the game will begin. If you are playing with other players, you'll need to wait until all players have joined the game before you can start.

Use the arrow keys on your keyboard to move and rotate the blocks in the game.

Clear lines by filling the rows with blocks. The more lines you clear, the higher your score.

If the blocks reach the top of the screen, the game is over.