This is a list of variants of the game Tetris. It includes officially licensed Tetris sequels, as well as unofficial clones.

Tetris is a tile-matching video game created by Russian software engineer Alexey Pajitnov in 1984. It has been published by several companies, most prominently during a dispute over the appropriation of the rights in the late 1980s. After a significant period of publication by Nintendo, the rights reverted to Pajitnov in 1996, who co-founded The Tetris Company with Henk Rogers to manage licensing.

3D Tetris is a 1996 puzzle video game developed by T&E Soft and published by Nintendo. It was released for the Virtual Boy on March 22, 1996 in North America. Players control multiple falling blocks, rotating and positioning them to clear layers in a three-dimensional environment similar to Tetris's gameplay. The game contains multiple modes and variations thereof, as well as different difficulty settings and levels. Parts of 3D Tetris are rendered as 3D wire-frame models. A version of the game entitled Polygo Block was to be released in February 1996 in Japanese markets, but never emerged. The game received mostly negative reviews with critics panning it for a lack of originality.

Solomon Wolf Golomb was an American mathematician, engineer, and professor of electrical engineering at the University of Southern California, best known for his works on mathematical games. Most notably, he invented Cheskers in 1948 and coined the name. He also fully described polyominoes and pentominoes in 1953. He specialized in problems of combinatorial analysis, number theory, coding theory, and communications. His game of pentomino inspired Tetris.

"Love Me or Hate Me" is the sixth single from English grime artist Lady Sovereign and the fourth from her debut album Public Warning. The single was confirmed for release by her official website and was released in October 2006. The song was produced by Lukasz "Dr. Luke" Gottwald. The video features Lady Sovereign appearing in Tetris-style blocks, and acting out certain lyrics of the song.

Magical Tetris Challenge is a puzzle game by Capcom for the Nintendo 64, Game Boy Color, and PlayStation. It is a version of Tetris featuring Disney characters. It is one of the few Nintendo 64 games to be entirely in 2D.

The New Tetris is a puzzle video game for the Nintendo 64. The game was developed by H2O Entertainment and published by Nintendo, based on the latter's popular Tetris series. The game was originally released on July 31, 1999, in North America.

Alexey Leonidovich Pajitnov is a Russian video game designer and computer engineer who developed Tetris while working for the Dorodnitsyn Computing Centre of the Soviet Academy of Sciences, a Soviet government-founded R&D center.

Puyo Puyo Tetris is a puzzle video game developed by Sonic Team and published by Sega. The game is a crossover between the Puyo Puyo series and the Tetris franchise, and features various gameplay modes incorporating both aspects. The game includes characters modeled and named after the seven Tetrominos, which are different puzzle pieces each made of four blocks.

Puyo Puyo Tetris 2 is an upcoming puzzle video game developed and published by Sega. It is a direct sequel to Puyo Puyo Tetris. The game will be released for PlayStation 4, Xbox One, Nintendo Switch, PlayStation 5 and Xbox Series X/S in December 2020, with a Microsoft Windows version scheduled for release in early 2021.

SpellTower is a puzzle video game by Zach Gage in which the player creates words from a jumble of letter tiles to clear the screen before it refills. The game has several game modes and a multiplayer battle mode. The impetus for the game—the concept of combining elements from Tetris and Boggle in what was a prototype of the puzzle video game Puzzlejuice—inspired Gage to create SpellTower. The game released for iOS in November 2011 to generally favorable reviews. Versions for OS X and Android followed over the next two years. In 2017 SpellTower Minutes was released. This browser-based Flash game created special "blitz" like modes not found in the mobile releases. A new iOS version released in 2017 swapped out the unnamed dictionary and began using Merriam-Webster's Third New International Dictionary, Unabridged. French and Dutch language specific versions were also released. A 2020 release, SpellTower+, added new game modes, cleaner visuals, and a jazz soundtrack.

TetriNET is a multiplayer online Tetris game for up to six people, that supports team play.

Tetris is a puzzle game developed by Atari Games and originally released for arcades in 1988. Based on Alexey Pajitnov's Tetris, Atari Games' version features the same gameplay as the computer editions of the game, as players must stack differently shaped falling blocks to form and eliminate horizontal lines from the playing field. The game features several difficulty levels and two-player simultaneous play.

Tetris is a puzzle video game developed by EA Mobile and published by Electronic Arts for iOS, Android, BlackBerry OS, PlayStation 3, PlayStation Portable and Windows Phone. The game featured gameplay like other Tetris titles, with a new soundtrack.

Tetris is a puzzle video game for the Game Boy released in 1989. It is a portable version of Alexey Pajitnov's original Tetris and it was bundled in the North American and European releases of the Game Boy itself. It is the first game to have been compatible with the Game Link Cable, a pack-in accessory that allows two Game Boys to link together for multiplayer purposes. A colorized remake of the game was released on the Game Boy Color entitled Tetris DX . A Nintendo 3DS Virtual Console version of Tetris was released in December 2011 and it lacked the multiplayer functionality. It was delisted from the Nintendo eShop after December 31, 2014.

Tetris is a puzzle video game for the Nintendo Entertainment System released in 1989. It was the first official console release of Tetris which was developed and published by Nintendo.

Tetris & Dr. Mario is a 1994 puzzle video game compilation developed by Intelligent Systems and published by Nintendo for the Super Nintendo Entertainment System. It contains enhanced remakes of Tetris (1989) and Dr. Mario (1990), which were originally released for both the Nintendo Entertainment System and Game Boy in North America. Both games include split-screen multiplayer and a "Mixed Match" mode that transitions between the two games.

Tetris 2 is a 1990 video game by František Fuka (Fuxoft). It is inspired by a Soviet game Tetris. It is considered to be the most successful game developed by Fuka.

Tetris 2 is a video game published in 1993 and 1994 by Nintendo for the Game Boy, Nintendo Entertainment System and Super Nintendo Entertainment System.
Tetris 64 is a puzzle video game for the Nintendo 64. It was released only in Japan in 1998 despite the whole game being in English. It is the only Nintendo 64 game that can make use of the Nintendo 64's bio sensor which was included with the game.

Tetris 99 is a free online version of the Tile-matching video game Tetris, developed by Arika, and published by Nintendo for the Nintendo Switch in February 2019. Incorporating elements of the battle royale genre, Tetris 99 has up to 99 players competing simultaneously to complete rows with falling tetrominoes, which in turn send attacks in the form of "garbage rows" to other players with the goal of knocking them out of the game.

Tetris Attack, also known as Panel de Pon, is a 1995 puzzle video game developed by Intelligent Systems and published by Nintendo for the Super Nintendo Entertainment System. A Game Boy version was released a year later. In the game, the player must arrange matching colored blocks in vertical or horizontal rows to clear them. The blocks steadily rise towards the top of the playfield, with new blocks being added at the bottom. Several gameplay modes are present, including a time attack and multiplayer mode.

Tetris Battle Gaiden is a puzzle video game developed and published in 1993 by Bullet Proof Software for the Super Famicom. Released only in Japan, the game is a variant of the Tetris series involving multiplayer battles comparable to those of the Puyo Puyo and Columns series of video games.

Tetris Blitz was a variant of Tetris. It was developed by EA Salt Lake published by Electronic Arts. It was released on mobile platforms such as iOS, Android, and Windows Phone. It was released in 2013 and was given mixed reviews. On January 20, 2020, EA announced that the game would be discontinued on April 21, 2020. As of April 22, 2020, it is no longer playable.

The Tetris Company, LLC (TTC) is based in Hawaii and is owned by Henk Rogers, Alexey Pajitnov and Blue Planet Software. The company is the exclusive licensee of Tetris Holding LLC, the company that owns Tetris rights worldwide. It licenses the Tetris brand to third parties.

Tetris DS is a puzzle video game developed and published by Nintendo for the Nintendo DS. A part of the Tetris game series, the game supports up to ten players locally, and supported up to four players online with the Nintendo Wi-Fi Connection service.

The Tetris effect occurs when people devote so much time and attention to an activity that it begins to pattern their thoughts, mental images, and dreams. It takes its name from the video game Tetris.

Tetris Effect is a tile-matching puzzle video game developed by Japanese studios Monstars and Resonair and published by Enhance Games. The game was released worldwide exclusively for the PlayStation 4 on November 9, 2018, and features support for the PlayStation VR. A Microsoft Windows version, with support for Oculus Rift and HTC Vive, released on July 23, 2019. The game garnered high praise from critics and was named Game of the Year by several publications. The enhanced version, named Tetris Effect: Connected, was announced for Xbox One, Xbox Series X/S and Windows 10 during Xbox Games Showcase on July 23, 2020, and was released on November 10, 2020. The expansion will be made available for existing platforms as a free update in 2021.

Tetris Giant, known as Tetris Dekaris in Japan, is an arcade game released in Japan in 2009 by Sega that features a giant version of the game Tetris. It is played on a large 70" DLP Projection Monitor, running on Sega System SP. It is controlled using giant joysticks, the right joystick being slightly lower than the left one, with a built-in shaker "rumble" motor, a device that Sega refers to as "Deka Lever". The playing field is 6 cells wide by 7 cells high as opposed to almost universal 10 cells wide by 20 high. The game can be played with up to two players.

Tetris Party is a puzzle video game by Hudson Soft for WiiWare. An installment of the Tetris series, the game supports the use of Miis and the Wii Balance Board, and features both local and online multiplayer in addition to several single-player modes unique to the game.

Tetris Plus is a puzzle video game developed by Natsume and published by Jaleco for arcades in 1996, and was ported to the Game Boy, Sega Saturn, and PlayStation later that year. The game would be followed by a sequel, Tetris Plus 2, in 1997. Ports were to be developed for the Atari Jaguar and Nintendo 64 but these never released.

Tetris Splash is a puzzle video game, part of the Tetris games, was published by Microsoft Game Studios for the Xbox 360 via Xbox Live Arcade. It is the first game produced by Tetris Online, Inc.

Tetris Ultimate is a puzzle video game developed by American studio SoMa Play and published by Ubisoft. Ubisoft partnered with The Tetris Company to develop the game to celebrate the 30th anniversary of the Tetris franchise.

Tetris Worlds is a version of the video game Tetris. Originally released in 2001 for Microsoft Windows and Game Boy Advance, it was later released for Xbox, GameCube, and PlayStation 2 in 2002. In 2003, an Xbox Live version and a single-disc compilation version were released for the Xbox. The latter was bundled with Xbox systems.

Tetris: Axis, released as Tetris in some regions, is a puzzle video game for the Nintendo 3DS developed by Hudson Soft and Bandai and was published by Nintendo. The game was released in all regions in October 2011 and was published by Namco Bandai Games and Tetris Online in Japan and PAL regions respectively.

Tetris: The Grand Master is a series of puzzle arcade games created by Arika.

Tetrisphere is a falling block puzzle video game for the Nintendo 64 (N64) console. Developed by Canadian company H2O Entertainment, a nearly complete version of the game was originally slated for release on the Atari Jaguar in early 1995. After Nintendo obtained its publishing rights, Tetrisphere was reworked for the N64 and released on the platform in North America on August 11, 1997, and the PAL regions in February 1998.

A tetromino is a geometric shape composed of four squares, connected orthogonally. This, like dominoes and pentominoes, is a particular type of polyomino. The corresponding polycube, called a tetracube, is a geometric shape composed of four cubes connected orthogonally.

Welltris is a puzzle video game, developed by Doka and licensed to Bullet-Proof Software. Adaptations were made by Sphere, Inc., for Spectrum Holobyte, and by Infogrames. It was originally released for MS-DOS and Macintosh in 1989. It was subsequently ported to the Amiga, Amstrad CPC and Atari ST in 1990 and the ZX Spectrum and Commodore 64 in 1991.

Wordtris is a Tetris offshoot designed by Sergei Utkin, Vyacheslav Tsoy and Armen Sarkissian and published by Spectrum Holobyte in 1991 for the IBM PC platform. The game was released for the Game Boy and Super NES in 1992.
