One of the most popular games in the world, Tetris celebrates its 25th birthday today. According to Telegraph
The game was created by Alexey Pajitnov, a computer engineer who was working for the Computing Centre of the Soviet Academy of Sciences.
It has sold more than 70 million copies, been released for nearly every video-game platform of the past two decades and even been played on the side of a skyscraper.
Alexey also created a lot of puzzle games, and a few for Microsoft as well, which were sold as Microsoft Entertainment Packs or Microsoft Puzzle Collections.
In honor of Tetris’ birthday, this edition of Apps for Windows is dedicated to a Tetris games. 
- Four game variations will keep you entertained for hours:
- Marathon – 15 challenging levels of gameplay.
- Challenge – See how far you can go in 10 minutes!
- Sprint – Race to clear 40 lines.
- Master – Instant drops — think fast!
- Watch a full instant replay of your best game, including the all-time and daily best!
- Awesome graphics and sounds heighten the Tetris experience.
- Automatically upload your score to a world-wide Leader Board — compare your ranking against players from the around the world!
These games should be suffice whether you want to play Tetris online or offline. If you find any other one that’s better than these two, let me know.
