Tetris

Tetris (Russian: Тетрис) is a puzzle video game and series created by Alexey Pajitnov, a Soviet software engineer, in the mid-1980s. In Tetris, falling pieces consisting of four connected blocks, known as tetrominoes, must be sorted into a pile. Once a horizontal line of the playfield is filled with blocks, the line disappears, granting points and preventing the pile from reaching the top. This gameplay has been used in approximately 220 versions across at least 70 platforms. Newer versions frequently add game mechanics, some of which have become standard. In the mid-1980s, Pajitnov created Tetris in his spare time while working at the Dorodnitsyn Computing Center of the Academy of Sciences. He initially programmed it in Pascal for the Elektronika 60 in about three weeks, then spent over two months porting it to the IBM PC using Turbo Pascal with help from Dmitry Pavlovsky and Vadim Gerasimov. Floppy disk copies were distributed freely throughout Moscow before spreading to Eastern Europe. Robert Stein of Andromeda Software saw Tetris in Hungary and contacted the Dorodnitsyn Computing Center to secure a license to release it commercially. Stein sublicensed it to Mirrorsoft in the UK and Spectrum HoloByte in the US. Both companies released Tetris in 1988 to commercial success and sublicensed to additional companies, including Henk Rogers' Bullet-Proof Software. Rogers negotiated with Elektronorgtechnica, the state-owned organization in charge of licensing Soviet software, to license Tetris to Nintendo for the Game Boy and Nintendo Entertainment System (NES); both versions were released in 1989. With 35 million sales as of June 2024, the Game Boy version is the highest-selling version. It contributed to the Game Boy's success and popularized Tetris. At the end of 1995, Dorodnitsyn Computing Center's rights to Tetris, arranged ten years prior, reverted to Pajitnov. The Tetris Company was established to manage...