Question: At June 1985's Consumer Electronics Show, on what date did the publisher of EarthBound unveil its new systems?

full_context: Document 1: StarTropics: StarTropics is an action-adventure video game released by Nintendo in 1990 for the NES. Unlike most of Nintendo's games, it was never released or intended to be released in Japan. It was released only in North America and Europe. It was produced, written and directed by Genyo Takeda of Nintendo Integrated Research & Development (who also developed the "Punch-Out!!" series). "StarTropics" was followed by a sequel titled "", released in 1994.
Document 2: Nintendo Entertainment System: As the 1990s dawned, gamers predicted that competition from technologically superior systems such as the 16-bit Sega Mega Drive/Genesis would mean the immediate end of the NES’s dominance. Instead, during the first year of Nintendo's successor console the Super Famicom (named Super Nintendo Entertainment System outside Japan), the Famicom remained the second highest-selling video game console in Japan, outselling the newer and more powerful NEC PC Engine and Sega Mega Drive by a wide margin. The console remained popular in Japan and North America until late 1993, when the demand for new NES software abruptly plummeted. The final Famicom game released in Japan is Takahashi Meijin no Bōken Jima IV (Adventure Island IV), while in North America, Wario's Woods is the final licensed game. In the wake of ever decreasing sales and the lack of new software titles, Nintendo of America officially discontinued the NES by 1995. However, Nintendo kept producing new Famicom units in Japan until September 25, 2003, and continued to repair Famicom consoles until October 31, 2007, attributing the discontinuation of support to insufficient supplies of parts.
Document 3: Metroid Prime Hunters: Metroid Prime Hunters is a first-person action-adventure video game published by Nintendo and developed by its Redmond-based subsidiary Nintendo Software Technology for the Nintendo DS handheld game console. It was released in North America in March 2006, with other territories later. It is a part of the "Metroid" series, and the story takes place between the events of "Metroid Prime" and "". Players assume the role of series protagonist Samus Aran, a bounty hunter who investigates a mysterious message that originated from the Alimbic Cluster.
Document 4: Nintendo Entertainment System: At June 1985's Consumer Electronics Show (CES), Nintendo unveiled the American version of its Famicom. This is the system which would eventually be officially deployed as the Nintendo Entertainment System, or the colloquial "NES". Nintendo seeded these first systems to limited American test markets starting in New York City on October 18, 1985, following up with a full-fledged North American release of the console in February of the following year. Nintendo released 17 launch titles: 10-Yard Fight, Baseball, Clu Clu Land, Duck Hunt, Excitebike, Golf, Gyromite, Hogan’s Alley, Ice Climber, Kung Fu, Pinball, Soccer, Stack-Up, Tennis, Wild Gunman, Wrecking Crew, and Super Mario Bros.h[›] Some varieties of these launch games contained Famicom chips with an adapter inside the cartridge so they would play on North American consoles, which is why the title screen of Gyromite has the Famicom title "Robot Gyro" and the title screen of Stack-Up has the Famicom title "Robot Block".
Document 5: EarthBound: EarthBound (known as Mother 2 in Japan) is a role-playing video game developed by Ape Inc. and HAL Laboratory and published by Nintendo for the Super Nintendo Entertainment System. The second entry in the "Mother" series, it was first released in Japan in August 1994, and in North America in June 1995. As Ness and his party of four, the player travels the world to collect melodies from eight Sanctuaries in order to defeat the evil alien force Giygas.
Document 6: Banjo-Tooie: Banjo-Tooie is a platform video game developed by Rare and originally released for the Nintendo 64 console in 2000. It is the second game in the "Banjo-Kazooie" series and the sequel to "Banjo-Kazooie". The game follows series protagonists Banjo and Kazooie as they attempt to stop the plans of the witch Gruntilda and her two sisters, who intend to vapourise the inhabitants of the game's world. The game features worlds that are significantly larger than those of its predecessor, requiring the player to complete challenges such as solving puzzles, jumping over obstacles, collecting items, and defeating bosses. It also includes a multiplayer mode where up to four players can compete in several minigames.
Document 7: Super Mario Land: Super Mario Land is a 1989 side-scrolling platform video game developed and published by Nintendo as a launch title for their Game Boy handheld game console. It is the first "Mario" platform game ever to be released for a handheld console. In gameplay similar to that of the 1985 "Super Mario Bros.", but resized for the smaller device's screen, the player advances Mario to the end of 12 levels by moving to the right and jumping across platforms to avoid enemies and pitfalls. Unlike other "Mario" games, "Super Mario Land" is set in Sarasaland, a new environment depicted in line art, and Mario pursues Princess Daisy (who makes her debut in this game). The game also includes two "Gradius"-style shooter levels.
Document 8: Nintendo Entertainment System: The Nintendo Entertainment System (commonly abbreviated as NES) is an 8 - bit home video game console that was developed and manufactured by Nintendo. It was initially released in Japan as the Family Computer (Japanese: ファミリーコンピュータ, Hepburn: Famirī Konpyūta) (also known by the portmanteau abbreviation Famicom (ファミコン, Famikon) and abbreviated as FC) on July 15, 1983, and was later released in North America during 1985, in Europe during 1986 and 1987, and Australia in 1987. In South Korea, it was known as the Hyundai Comboy (현대컴보이 Hyeondae Keomboi) and was distributed by SK Hynix which then was known as Hyundai Electronics. The best - selling gaming console of its time, the NES helped revitalize the US video game industry following the video game crash of 1983. With the NES, Nintendo introduced a now - standard business model of licensing third - party developers, authorizing them to produce and distribute titles for Nintendo's platform. It was succeeded by the Super Nintendo Entertainment System.
Document 9: Nintendo Entertainment System: Video output connections varied from one model of the console to the next. The original HVC-001 model of the Family Computer featured only radio frequency (RF) modulator output. When the console was released in North America and Europe, support for composite video through RCA connectors was added in addition to the RF modulator. The HVC-101 model of the Famicom dropped the RF modulator entirely and adopted composite video output via a proprietary 12-pin "multi-out" connector first introduced for the Super Famicom/Super Nintendo Entertainment System. Conversely, the North American re-released NES-101 model most closely resembled the original HVC-001 model Famicom, in that it featured RF modulator output only. Finally, the PlayChoice-10 utilized an inverted RGB video output.
Document 10: Nintendo Entertainment System: In the UK, Italy and Australia which share the PAL A region, two versions of the NES were released; the "Mattel Version" and "NES Version". When the NES was first released in those countries, it was distributed by Mattel and Nintendo decided to use a lockout chip specific to those countries, different from the chip used in other European countries. When Nintendo took over European distribution in 1990, they produced consoles that were then labelled "NES Version"; therefore, the only differences between the two are the text on the front flap and texture on the top/bottom of the casing.
Document 11: Super Mario Bros.: Super Mario Bros. is a platform video game developed and published by Nintendo for the Nintendo Entertainment System home console. Released as a sequel to the 1983 game Mario Bros., Super Mario Bros. was released in Japan and North America in 1985, and in Europe and Australia two years later. In Super Mario Bros., the player controls Mario and in a two - player game, a second player controls Mario's brother Luigi as he travels through the Mushroom Kingdom in order to rescue Princess Toadstool from the antagonist Bowser.
Document 12: Mole Mania: Mole Mania, known in Japan as , is a 1996 video game developed by Nintendo EAD and Pax Softnica, and published by Nintendo for the original Game Boy. It is also one of the least known works of Shigeru Miyamoto. The game was re-released for the Nintendo 3DS Virtual Console in all major regions throughout 2012.
Document 13: List of Super Nintendo Entertainment System games: Of the console's 783 official releases, 249 were exclusive to North America and 62 to Europe. The Super NES was released in North America on August 23, 1991 with its launch titles being Super Mario World, F - Zero, Pilotwings, SimCity, and Gradius III. The last game to be officially published for the system was Frogger in 1998. The best - selling game is Super Mario World with over 20.6 million units sold. Despite the console's relatively late start, and the fierce competition it faced in North America and Europe from Sega's Genesis / Mega Drive console, it was the best - selling console of its era.
Document 14: The Legend of Zelda: Link's Awakening: "Link's Awakening" began as a port of the Super NES game "", developed after-hours by Nintendo staff. It grew into an original project under the direction of Takashi Tezuka, with a story and script created by Yoshiaki Koizumi and Kensuke Tanabe. It is one of the few "Zelda" games not to take place in the land of Hyrule, and does not feature Princess Zelda or the Triforce relic. Instead, protagonist Link begins the game stranded on Koholint Island, a place guarded by a whale-like deity called the Wind Fish. Assuming the role of Link, the player fights monsters and solves puzzles while searching for eight musical instruments that will awaken the sleeping Wind Fish and allow him to escape from the island.
Document 15: Nintendo Entertainment System: For its complete North American release, the Nintendo Entertainment System was progressively released over the ensuing years in four different bundles: the Deluxe Set, the Control Deck, the Action Set and the Power Set. The Deluxe Set, retailing at US$199.99 (equivalent to $475 in 2016), included R.O.B., a light gun called the NES Zapper, two controllers, and two Game Paks: Gyromite, and Duck Hunt. The Basic Set, retailing at US$89.99 with no game, and US$99.99 bundled with "Super Mario Bros." The Action Set, retailing in 1988 for US$149.99, came with the Control Deck, two game controllers, an NES Zapper, and a dual Game Pak containing both Super Mario Bros. and Duck Hunt. In 1989, the Power Set included the console, two game controllers, a NES Zapper, a Power Pad, and a triple Game Pak containing Super Mario Bros, Duck Hunt, and World Class Track Meet. In 1990, a Sports Set bundle was released, including the console, an NES Satellite infrared wireless multitap adapter, four game controllers, and a dual Game Pak containing Super Spike V'Ball and Nintendo World Cup. Two more bundle packages were later released using the original model NES console. The Challenge Set of 1992 included the console, two controllers, and a Super Mario Bros. 3 Game Pak for a retail price of US$89.99. The Basic Set, first released in 1987, was repackaged for a retail US$89.99. It included only the console and two controllers, and no longer was bundled with a cartridge. Instead, it contained a book called the Official Nintendo Player's Guide, which contained detailed information for every NES game made up to that point.
ground_truth: October 18, 1985
sub_queries: What company published EarthBound? Answer: Nintendo
What day did Nintendo unveil the new systems? Answer: October 18, 1985