The game of Tetris needs no introduction but the fact that it is now available for free is worth mentioning.
The classic game of tetris is a favorite of many. It is a highly addictive and challenging game. It might seem simple at the beginning but you will soon realize that you need to use a lot of skills and reflexes to score higher. The objective of the game is to build straight lines of the falling blocks at the bottom of the game board. Each line completed disappears from the game board adding to your score. If you keep piling up the blocks it will soon touch the top of the game board thus ending your game. This version of the game enables you to play against other players and win money as well. Other partner programs accompanying the game can be removed if you need the game alone. The game has different levels of difficulty which you will get a chance to explore once you start mastering the game and start scoring higher.
You will have to try very hard to keep your hands off the game while at work.