Tetris classic old game

"Tetris Puzzle Game" - this is the best classic online game. Dive into the childhood, remember how it was wonderful to spend the night playing the old school games. Classic 90x games are freely available. Play online, nostalgic!

Tetris (Russian: Тетрис [ˈtɛtrʲɪs]) is a tile-matching puzzle video game, originally designed and programmed by Russian game designer Alexey Pajitnov (Russian: Алексе́й Леони́дович Па́житнов).[1] The first playable version was completed on June 6, 1984,[2] while he was working for the Dorodnitsyn Computing Centre of the Academy of Science of the Soviet Union in Moscow.[3] He derived its name from the Greek numerical prefix tetra- (all of the game's pieces contain four segments) and tennis, Pajitnov's favorite sport.[4][5]

Tetris was the first entertainment software to be exported from the Soviet Union to the United States, where it was published by Spectrum HoloByte for the Commodore 64 and the IBM PC. Tetris is a popular use of tetrominoes, the four-element special case of polyominoes. Polyominoes have been used in popular puzzles since at least 1907, and the name was given by the mathematician Solomon W. Golomb in 1953.

The game, or one of its many variants, is available for nearly every video game console and computer operating system, as well as on devices such as graphing calculators, mobile phones, portable media players, PDAs, Network music players and as an Easter egg on non-media products like oscilloscopes.[6] It has inspired Tetris serving dishes[7] and been played on the sides of various buildings.[8]

While versions of Tetris were sold for a range of 1980s home computer platforms as well as arcades, it was the successful handheld version for the Game Boy launched in 1989 that established the game as one of the most popular. Electronic Gaming Monthly's 100th issue had Tetris in first place as "Greatest Game of All Time". In 2007, Tetris came in second place in IGN's "100 Greatest Video Games of All Time". In April 2014, it was announced that the Tetris franchise had sold more than 495 million copies; approximately 70 million physical copies and over 425 million copies for cell phones, making it the best selling paid-downloaded game of all time.

Tetriminos are game pieces shaped like tetrominoes, geometric shapes composed of four square blocks each. A random sequence of Tetriminos fall down the playing field (a rectangular vertical shaft, called the "well" or "matrix"). The objective of the game is to manipulate these Tetriminos, by moving each one sideways (if the player feels the need) and rotating it by 90 degree units, with the aim of creating a horizontal line of ten units without gaps. When such a line is created, it gets cleared and any block above the deleted line will fall. When a certain number of lines are cleared, the game enters a new level. As the game progresses, each level causes the Tetriminos to fall faster, and the game ends when the stack of Tetriminos reaches the top of the playing field and no new Tetriminos are able to enter. Some games also end after a finite number of levels or lines.

All of the Tetriminos are capable of single and double clears. I, J, and L are able to clear triples. Only the I Tetrimino has the capacity to clear four lines simultaneously, and this is referred to as a "tetris". (This may vary depending on the rotation and compensation rules of each specific Tetris implementation. For instance, in the Super Rotation System used in most recent implementations,[9] certain situations allow T, S, and Z to 'snap' into tight spots and clear triples.)[10]