| In 1985, Alexey Pazhitnov invented Tetris
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| | compensation rules of each specific
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| as part of a science project for the
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| | Tetris implementation; For instance, in
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| University of Sciences in Moscow. The
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| | the "Tetris Worlds" rules used in many
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| name Tetris is derived from the Greek
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| | recent implementations, certain rare
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| word "Tetra" which stands for four - as
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| | situations allow T, S and Z to 'snap'
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| all the pieces in the game are made of
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| | into tight spots, clearing triples.)
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| four blocks.
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| | It is believed to be one of the best
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| Seven randomly rendered tetrominoes or
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| | selling games of all time, mostly due to
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| tetrads - shapes composed of four blocks
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| | it's availability on a great amount of
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| each - fall down the playing field. The
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| | platforms. Tetris has been featured in
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| object of the game is to manipulate these
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| | Arcades, mobile gaming devices such as
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| tetrominoes with the aim of creating a
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| | Nintendo's Game Boy, mobile phones, PDAs,
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| horizontal line of blocks without gaps.
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| | personal computers and of course the web.
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| When such a line is created, it
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| | The music for the original Game Boy
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| disappears, and the blocks above (if any)
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| | edition of Tetris titled "Music A" has
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| fall. As the game progresses, the
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| | become very widely known. It is a in fact
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| tetrominoes fall faster, and the game
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| | a Russian folk tune called "Korobeyniki".
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| ends when the stack of Tetrominoes
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| | To this day it is estimated that two our
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| reaches the top of the playing field.
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| | of three adults living in the US identify
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| The seven rendered tetrominoes in Tetris
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| | the tune as "The Tetris tune".
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| are referred to as I, T, O, L, J, S, and
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| | Tetris is a registered trademark of the
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| Z. All are capable of single and double
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| | Tetris Company LLC, but the game itself
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| clears. I, L, and J are able to clear
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| | is not copyrighted in the US (games
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| triples. Only the I tetromino has the
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| | cannot be copyrighted, only patented, and
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| capacity to clear four lines
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| | any Patent claims to Tetris would be
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| simultaneously, and this clear is
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| | expired by today) - which is why many
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| referred to as a "tetris." (This may vary
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| | Tetris clones legally exist.
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| depending on the rotation and
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