List of curiosities

Little known facts

The number of board states in Tetris can have is 2²⁰⁰ = 1 606 938 044 258 990 275 541 962 092 341 162 602 522 202 993 782 792 835 301 376 ≈ 1.6 x 10⁶⁰.
The number of stable ("with non-filled line") board states is 1022¹⁹ x 1023 = 1 546 830 240 339 583 941 968 754 047 234 064 022 827 366 713 230 467 631 939 584 ≈ 1.54 x 10⁶⁰
Nowadays Tetris logo was drawn by Roger Dean

Also, according to RealTechnews:

The game inspired a terrible single in 1992 by Dr Spin, featuring samples of music composed by Andrew Lloyd Webber
In September 2002, Faiz Chopdat, 23, of Blackburn, was jailed for four months after refusing to turn off his mobile on a flight from Egypt to Manchester. The crew asked him three times to switch off the phone, which was interfering with the plane’s communications system, but each time Chopdat turned it on again. He was playing Tetris.
The world’s smallest game of Tetris took place under an electron microscope using 42 glass ‘microspheres’ at the Department of Physics of Complex Systems in Amsterdam (video here)
Yuri Yevushenko, director of the Russian Academy in the 1980s, claims Tetris is so successful because "unlike American games it is not about murder, shooting or chasing; it is about building and order."
In a recent US study at the Harvard Medical School’s department of psychiatry, 27 Tetris players spent seven hours a day, for three days, playing the game. Many had ‘Tetris dreams’.