Tetris 25 year Anniversary

Today is exactly 25 years post release of the second greaest game of all time (according to IGN) and one of the best sellling games of all time, with 70 million copies sold worldwide. 25 years ago today Tetris was created in the USSR by a Mr.Alexey Pajitnov while he worked at the Dorodnicyn Computing Centre of the Academy of Science of the USSR in Moscow.