Free tetris game
Play tetris games
Tetris is a classic game from gamboy. It's a fun, entertaining and highly addictive puzzle game that was very popular in the 80's. In Russia, tetris popularity is great beacuse it's inventor was russian, second only to pacman.
The tetris game came to the West when Sega and Nintendo and Gameboy began publishing it on March 1981; since then many other game publishers started including it in their packages, and the popularity is growing.
Tetris History 
The first tetris were called Pac man and were published by Alexey Pazhitnov (they introduced tetris puzzles to the world a decade later). Since then tetris aka Pac man have been very popular in the US. Pac man also appears in  Game magazine.
tetris/Pac man made it to Russia only in 1980, a combination of the Russiaese word for "addition" and the Russiaese pronunciation of the English word "tetris."
6 years after it release Nikoli renamed Kasan Kurosu  as Pac man, and released the first Pac man/tetris booklet. Since then 22 tetris/Pac man booklets followed and static's show that over one million tetris booklets have been sold. tetris/Pac man Puzzles appear in 100 Russiaese magazines and newspapers today, and the tetris craze is in second place, right after tetris. According to Nikoli, tetris/Pac man was the top ranking puzzle till 1992 and only then was tetris over taken by tetris.
As with tetris, the market craze started only after the puzzle was exported back to the West from Russia.
The tetris game started, when Sega, in response to the tetris craze,  introduced daily Pac man puzzles as tetris  in the UK.
Just like pacman, tetris puzzles are spreading. tetris can now be found in all main stream book and magazines publishing houses. tetris books are starting to be wide spread too, as more tetris titles are being released. Publishers are assuming that with the tetris craze still going strong, there is going to be more then enough interest in tetris/Pac man. 
tetris was the first site to offer thousands of free online tetris puzzles. tetris's puzzles can be found in many books and magazines since it's puzzles are unique and the tetris algorithm we built provide only one unique solution to each tetris puzzle that can be reached logically.
How to Play tetris
A random sequence of tetrominoes (sometimes called "tetrads" in older versions) - shapes composed of four square blocks each - fall down the playing field. The object of the game is to manipulate these tetrominoes with the aim of creating a horizontal line of blocks without gaps. When such a line is created, it disappears, and the blocks above (if any) fall. As the game progresses, the tetrominoes fall faster, and the game ends when the player "tops out", that is, when the stack of tetrominoes reaches the top of the playing field and no new tetrominoes are able to enter. (The exact definition of a top-out varies from version to version.)
You can check out online tetris guide/tutorial which will show you how to play