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''Tetris'' (styled ''TETЯIS'') is a puzzle game developed by Atari Games and originally released for arcades in 1988. Based on Alexey Pajitnov's ''Tetris'', Atari's 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. Atari later ported the game to the Nintendo Entertainment System (NES) and released an unlicensed NES version in 1989 under its Tengen brand. However, there were issues with the title's publishing rights. After much legal wrangling, Nintendo itself ended up with the rights to publish console versions of ''Tetris'', leaving Atari with only the rights to arcade versions. As a result, the Tengen game was only on the shelf for four weeks before Atari was legally required to recall the game and destroy any remaining inventory of its NES version. Nintendo produced its own version for the Game Boy as well as the NES. Both versions were commercially successful and Nintendo held the ''Tetris'' license for many years. With less than 100,000 copies known to exist, the Tengen release has since become a collector's item, due to its short time on the market. Various publications have since noted that Tengen's ''Tetris'' was in some ways superior to the official NES release, especially since the Tengen game featured a two-player simultaneous mode not available in Nintendo's game. ==Development and history== In 1988, Soviet Academy of Sciences researcher Alexey Pajitnov alongside Dmitry Pavlovsky and Vadim Gerasimov developed ''Tetris'' out of a desire to create a two-player puzzle game,〔(【引用サイトリンク】url=http://vadim.oversigma.com/Tetris.htm )〕 and the game spread commercially amongst computers. Mirrorsoft president Robert Stein approached Pajitnov with an offer to distribute ''Tetris'' worldwide, and secured the rights to license the title, which were in turn granted to Spectrum HoloByte.〔 After seeing the game run on an Atari ST, programmer Ed Logg petitioned Atari Games to license it, and approached Stein. With the rights secured, Atari Games produced an arcade version of ''Tetris'', and under their Tengen brand name began development to port the title to the Nintendo Entertainment System (NES) in May 1989.〔〔 Tengen along with Spectrum HoloByte later licensed the rights to Henk Rogers on behalf of Nintendo to distribute ''Tetris'' in Japan, and Rogers traveled to Moscow to secure permission to distribute ''Tetris'' with the Game Boy. Around this same time, Nintendo approached Spectrum HoloByte on the prospects of developing a version of ''Tetris'' for the Game Boy, and a representative of Mirrorsoft, Kevin Maxwell, traveled to Russia to secure permission on their behalf.〔 However, because Stein had secured the rights from Pajitnov directly and not from the Russian authorities,〔 the USSR's Ministry of Software and Hardware Export stated that the console rights to ''Tetris'' had been licensed to nobody, and that Atari Games had only been licensed the rights to produce arcade games with the property. They sent a fax to Maxwell in England with 48 hours to respond; Maxwell however was still in Russia at the time and received the fax late, resulting in licensing being distributed to Nintendo.〔 In April 1989, Tengen, who had previously filed an anti-trust suit against Nintendo, sued Nintendo again claiming rights to distribute ''Tetris'' on the NES, and Nintendo counter-sued citing infringement of trademark. In June 1989, a month after the release of Tengen's ''Tetris'', a U.S. District Court Judge issued an injunction barring Tengen from further distributing the game, and further ordered all existing copies of the game be destroyed. As a result, 268,000 ''Tetris'' cartridges were recalled and destroyed. The art which was featured on the Tengen cover was an airbrush painting by well known illustrator Marc Ericksen featuring St. Basil's Cathedral in Red Square, Moscow, and featuring at its base a falling stone concept that mirrored the gameplay. Atari made use of the same art when advertising the new release, as seen in the Atari inset above right, adding a fireworks motif that was not a part of the original art. In an interview, Ed Logg notes that the Tengen version of ''Tetris'' was built completely from scratch, using no source code or material from the original game. After presenting the title at the Consumer Electronics Show in Las Vegas, Tengen president Randy Browleit requested improvements in the game. Originally portrayed solely in black and white, Browleit requested that the pieces be portrayed in color, and Logg altered the game accordingly prior to the next Consumer Electronics Show. When asked which version of ''Tetris'' he liked the most, Logg stated the Nintendo version of Tetris for the NES "wasn't tuned right", citing a lack of logarithmic speed adjustment as the source of that version's overly steep increases in difficulty.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tetris (Atari)」の詳細全文を読む スポンサード リンク
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