Today is the 25th birthday of one of the most popular games of all times. While it's seen thousands of reincarnations, the original Tetris game was created June 6th, 1984 by Alexey Pajitnov. There are very few people who haven't played it and it seems Google shares the love as it is celebrating the game's birthday with a custom Tetris-inspired logo on its home page.

“This is a huge honor for all of us at Tetris,” said Henk Rogers, president & CEO of Blue Planet Software, the company that manages the exclusive licensing rights to Tetris. “We are exceedingly grateful to Google for such a meaningful global salute. Both Google and TETRIS share important qualities that bring people around the world together. Both Google and TETRIS transcend culture and fulfill a universal desire for order.”

“This is the best anniversary present,” said Pajitnov, who created the first game of Tetris on June 6, 1984 after two weeks of programming. “Twenty-five years ago, I wrote the program for TETRIS in my spare time. Never in my wildest dreams did I think my love of puzzles would create a game that’s loved by so many millions.”

The game is one of the most popular in the world, having sold over 125 million copies over various platforms and being translated in over 50 languages. There have been over 75 million sold on mobile devices alone.

For those of you wondering why you can't see the new Google logo we should point out that Google is rolling it out around the world as the day turns to the 6th and it seems that google.com hasn't made the change yet. You could go to google.co.uk or even google.jp as both sites have made the switch. But if you're eager to know what it looks like or if you missed it there's a screenshot to the left.