In January 1990, the video game industry arrived in Las Vegas carrying the momentum of one decade and the uncertainty of another.
Nintendo had rebuilt the American console market and now possessed a sprawling network of licensees. Sega was trying to establish the Genesis as the more powerful alternative for players ready to move beyond the 8-bit generation. NEC was attempting to carve out its own place with the TurboGrafx-16 and its expensive CD-ROM expansion. Atari was preparing to push the color Lynx handheld beyond its limited launch markets. Computer publishers, meanwhile, were watching the console business grow so large that some had abandoned the main convention floor for hotel rooms, trailers, and suites.
All of them converged on the International Winter Consumer Electronics Show from January 6 through January 9, 1990, in Las Vegas.
The official CES directory preserved by the Video Game History Foundation confirms those dates, an important distinction because another Consumer Electronics Show would take place in Chicago from June 2 through June 5. Photographs, announcements, and recollections from the two events have sometimes been grouped together simply as “CES 1990,” even though the January and June shows represented different moments in an industry changing extraordinarily quickly.
The January show captured that transformation almost perfectly.
Nintendo was enormous, Sega was ambitious, NEC was searching for momentum, Atari was betting on portable color gaming, and CD-ROM technology was beginning to hint at a future in which cartridges might no longer define what a video game could contain.
The Video Game Industry Takes Over the West Hall
The Winter CES was much larger than a video game convention. Consumer electronics manufacturers came to Las Vegas with televisions, audio equipment, telephones, home electronics, and experimental technologies that they hoped might become the next great consumer product.
The larger industry entered 1990 without a clear successor to the blockbuster technologies of the previous decade. The Los Angeles Times, previewing the show on January 5, described an electronics business searching for the next major product after the VCR, cordless telephone, compact disc player, and the remarkable resurrection of home video games.
Inside the Las Vegas Convention Center, however, there was little doubt that games had become one of the most visible forces in consumer electronics.
Computer Entertainer, whose editors attended the event, reported that exhibitors had contracted for a record 800,000 square feet of space. Most computer and video game companies were concentrated in the West Hall, where Nintendo occupied the largest gaming presence, followed by Sega and NEC. Nintendo’s enormous area incorporated 51 NES and Game Boy software licensees, along with seven companies licensed only for accessories.
The size of Nintendo’s presence illustrated how thoroughly the American video game business had changed since the crash earlier in the decade. Only a few years before, retailers had treated home video games with suspicion. Now dozens of publishers were competing for space beneath Nintendo’s umbrella while rivals attempted to build ecosystems capable of challenging it.
The transformation was so pronounced that Compute! summarized the show with a memorable observation. Sega, Nintendo, and NEC were so visible that traditional computer companies could almost disappear between the game machines. Several computer software publishers had moved their demonstrations into hotel suites, recreational vehicles, or other spaces away from the convention center.
Winter CES was still an electronics show, but video games were increasingly capable of swallowing the room.
Nintendo’s Enormous CES City
No company better demonstrated the scale of the new console business than Nintendo.
Computer Entertainer described entering Nintendo’s CES display as an overwhelming experience. Fifty-one software licensees were associated with Nintendo’s NES and Game Boy business, while Nintendo itself brought six new games and two new accessories.
At the center of the attention was Super Mario Bros. 3.
The game had already become a phenomenon in Japan, where Computer Entertainer reported sales of 2.6 million copies by the time of CES. American players were waiting for its February 1990 release, and Nintendo used the Las Vegas show to keep Mario at the center of its expanding empire. Nintendo’s own Nintendo Power later remembered the game being constantly played at the company’s booth.
Yet Nintendo’s showing was about much more than Mario.
The company displayed Final Fantasy, introducing many American players and retailers to the role-playing game that would become one of the industry’s longest-running franchises. StarTropics offered another adventure built specifically with Western audiences in mind. Super Spike V’Ball and NES Play Action Football helped demonstrate Nintendo’s new multiplayer accessories, the NES Satellite and NES Four Score, which allowed compatible games to support as many as four players. The Satellite used infrared technology to provide a form of wireless play, while the Four Score connected directly to the NES.
Nintendo’s licensees made the display even more difficult to absorb.
Absolute Entertainment returned with David Crane’s A Boy and His Blob. Acclaim displayed NES games including Double Dragon II, Bigfoot, NARC, and Total Recall, alongside several Game Boy projects. Bandai showed Dragon Spirit, Dynowarz, and Gilligan’s Island. Data East brought Al Unser Jr.’s Turbo Racing, Heavy Barrel, and an NES adaptation of Battle Chess. FCI was preparing an NES version of Ultima IV and had acquired rights connected to Advanced Dungeons & Dragons games. Konami brought Super C and other projects, while Tecmo showed Ninja Gaiden II. Ultra displayed Snake’s Revenge, its unusual follow-up to Metal Gear.
The list seemed endless because that was partly the point. Nintendo was demonstrating not simply a console, but an industry built around its console.
Game Boy Becomes an Ecosystem
Nintendo’s handheld was only months into its American life when the industry gathered in Las Vegas, yet Winter CES demonstrated that Game Boy was already becoming much more than a machine built around Tetris.
Publisher after publisher arrived with portable projects.
Acclaim showed Kwirk, Fortress of Fear, and WWF Superstars. Activision had Malibu Beach Volleyball. Bandai displayed Hyper Lode Runner. Jaleco was bringing Bases Loaded to the handheld. Konami showed NFL Football. Milton Bradley had Jordan vs Bird, Mousetrap Hotel, and Super Scrabble. Taito brought Space Invaders and Flipull. Tradewest displayed Double Dragon, which Computer Entertainer regarded as one of the best Game Boy titles it saw at CES.
Puzzle and strategy games were especially noticeable. Computer Entertainer identified puzzle games as one of the show’s major trends, appearing across the Game Boy, NES, and computer markets. That development was particularly appropriate for a handheld whose early identity had been transformed by Tetris.
Bullet-Proof Software, the company led by Henk Rogers, was among the newer participants in Nintendo’s American licensing network. Its presence also connected the show directly to Alexey Pajitnov, the creator of Tetris, and to a growing belief that puzzle games could occupy a major place beside sports games, shooters, and traditional action titles.
The Game Boy had entered the market competing against technological expectations that favored color screens and greater visual power. Winter CES suggested that Nintendo was answering those concerns with something else: software, publishers, familiar brands, and an increasingly large library.
Sega Builds a Theater Around the Genesis
Nintendo may have commanded the most space, but Sega understood that fighting Nintendo would require spectacle.
Its Genesis presentation was structured almost like an attraction. Contemporary coverage described visitors moving through a themed maze or theater where different rooms introduced Sega’s coming software and partnerships.
One section was devoted to Phantasy Star II, the massive role-playing sequel that Sega was positioning as evidence that its 16-bit system could support deeper games for an older audience. Sega director of product development Steve Hanawa told Computer Entertainer that the company saw simulations and role-playing games as important because Genesis was aimed partly at players older than Nintendo’s perceived core audience.
Elsewhere in Sega’s display were some of the most recognizable entertainment licenses available.
Sega announced relationships involving Marvel Comics and Disney. A Spider-Man game was planned, as was Dick Tracy, based on the upcoming Disney film starring Warren Beatty. Sega was also discussing a game based on Disney’s Fantasia, which was celebrating its fiftieth anniversary.
Then came Michael Jackson.
Michael Jackson Moonwalks Into Sega’s Future
Among Sega’s biggest attractions was Michael Jackson’s Moonwalker.
The Genesis project was not merely a game with Jackson’s name attached to the packaging. Sega’s presentation emphasized Jackson’s involvement, his music, his dancing, and the unusual history behind the collaboration.
According to the account given to Computer Entertainer at CES, Jackson had been a fan of Sega’s arcade games and owned machines including After Burner. Following his 1988 Japanese tour, he visited Sega in Japan, beginning the relationship that eventually produced Moonwalker. A Sega spokesman said Jackson wanted the project to remain enjoyable even without relying on his celebrity.
The CES demonstration used Jackson’s dancing as part of the game’s identity. His character fought through movement and special abilities, while the soundtrack incorporated music associated with the singer.
For Sega, the license represented something larger than one game. Nintendo possessed Mario, Zelda, and an extraordinary network of publishers. Sega was looking for ways to make Genesis feel culturally different, more theatrical, and connected to entertainment beyond the traditional video game audience.
Winter CES provided the stage.
Sega’s First Generation of Genesis Partners
Perhaps more important for the Genesis in the long term was the appearance of third-party support.
A section of Sega’s CES area was devoted to the first eight outside developers producing new Genesis titles. Contemporary observers considered this significant because Nintendo’s licensing system had created questions about whether established NES companies would also support rival hardware.
They would.
Activision was developing Hard Yardage and Tongue of the Fatman. DreamWorks showed Shove It! The Warehouse Game and Target Earth. Hot-B displayed Ka-Ge-Ki and Insector X. Namco brought Phelios. Seismic was working on Super Hydlide. Tecno Soft showed Thunder Force III. Tengen demonstrated Skull & Crossbones and Hard Drivin’, while also discussing Paperboy, RoadBlasters, and Klax.
The importance of those announcements went beyond the individual games.
The Genesis could not challenge Nintendo if Sega alone had to provide its software. Winter CES offered visible evidence that an alternative publishing network was beginning to develop.
Sega was also demonstrating the TeleGenesis Modem, already available in Japan, with TeleGenesis Baseball. Additional networked games such as Cyberball and Battling Worlds were announced. The American plans would not develop into the online revolution imagined at the show, but the demonstration remains a fascinating example of how early companies were already thinking about consoles communicating over telephone lines.
At the same time, Sega had not abandoned its 8-bit Master System. The company showed a substantial 1990 lineup including Golden Axe, Ultima IV, Golfamania, Tennis Ace, Basketball Nightmare, Assault City, and other games while preparing to take distribution of the system back from Tonka.
The old and new generations were temporarily sharing the same floor.
NEC Brings TurboGrafx-16 to CES
NEC occupied the next major position behind Nintendo and Sega.
Although the TurboGrafx-16 had already reached the American market in 1989, Computer Entertainer identified the January event as the system’s first appearance on the CES convention floor. NEC arrived with many of the 19 games released by the end of the previous year and another group scheduled for the first half of 1990.
Those games included Final Lap Twin, Space Harrier, Ordyne, Deep Blue, Takin’ It to the Hoop, Military Madness, Neutopia, Cratermaze, J.J. & Jeff, and a strange prehistoric action game starring a bald hero who attacked enemies with his head.
That game was Bonk’s Adventure.
Bonk would become one of the characters most strongly associated with the TurboGrafx-16 in North America, making the CES appearance particularly interesting in retrospect. At the time, however, he was one title among many as NEC tried to prove that its system could sustain a broad American library.
Third-party support was also beginning to materialize. Cinemaware, Tengen, Lucasfilm Games, ICOM Simulations, and Incredible Technologies were among the companies associated with TurboGrafx development. Tengen announced RBI Baseball 2 and Xybots, while Cinemaware demonstrated TV Sports Football.
NEC was attempting to build exactly what Sega was building: an ecosystem capable of preventing Nintendo from defining the entire market.
CD-ROM Leaves the Convention Floor
The most futuristic part of NEC’s story was not necessarily happening inside its main booth.
The TurboGrafx-CD had made NEC the first company to commercially pair a home video game console with CD-ROM technology in the United States. The potential was enormous. A compact disc could hold dramatically more information than a conventional cartridge, creating possibilities for music, voices, animation, and video.
The problem was demonstrating why consumers needed it.
No new CD titles were shown in NEC’s main CES display, but Cinemaware created one of the show’s most memorable demonstrations at the Bally Hotel. There, the company recreated something resembling a television production environment to demonstrate the CD-ROM version of It Came from the Desert.
Actress Lauren McKim was filmed against a green screen while Cinemaware personnel demonstrated how live-action footage could be combined with computer-generated imagery, including the game’s giant ants. The goal was to show how CD-ROM storage could push games closer to television and motion pictures.
The demonstration looks especially significant from the perspective of later gaming history.
During the following decade, full-motion video, recorded dialogue, cinematic presentation, and CD-based consoles would become major parts of the industry’s technological race. In January 1990, companies were still experimenting with how to explain those possibilities to retailers.
Computer publishers were thinking about the same transition. Computer Gaming World argued that the growing exchange between computer and console development would force improvements in interface design, sound, and storage. Rather than treating consoles and computers as completely separate industries, the magazine saw the two markets beginning to influence one another.
Winter CES was therefore not simply a cartridge show. One version of the video game’s future was already being demonstrated in hotel ballrooms away from the main floor.
Atari Tries to Turn the Lynx Into a National Competitor
Portable gaming produced another major contest.
Atari’s Lynx had reached the market in limited quantities during 1989, offering a backlit color display at a time when Nintendo’s Game Boy used a monochrome screen. The technology impressed observers, but availability had been a serious problem.
At Winter CES, Atari outlined plans to expand distribution.
Computer Entertainer reported that Lynx had previously been concentrated largely around New York but would soon spread into Chicago, Los Angeles, Philadelphia, Boston, and San Francisco. Atari hoped to achieve nationwide distribution by the middle of 1990 and build a library of more than 25 games by the end of the year.
An agreement with Atari Games was particularly important. Despite the shared Atari name, Atari Corporation and Atari Games were separate companies. The licensing arrangement could bring arcade properties including Gauntlet, Cyberball, Vindicators, 720°, Paperboy, and Hard Drivin’ to the Lynx, while Ninja Gaiden was also planned for the handheld.
The Lynx represented almost the opposite strategy from Game Boy. Nintendo had chosen affordability, battery life, portability, and an expanding software network over a color display. Atari emphasized technical capability.
Winter CES showed that the portable war was only beginning.
The Handheld Rumors That Were More Than Rumors
The most repeated hardware rumor at the show concerned Sega and NEC.
Computer Entertainer reported that the rumor heard most often around CES was that both companies were developing color handheld video game systems. Neither company would officially confirm or deny the reports.
The NEC rumor was particularly interesting because another contemporary source later revealed what had actually happened.
The February 15, 1990 issue of the Japanese trade newspaper Game Machine reported that NEC Technologies had demonstrated a prototype color handheld during the January 6 to 9 CES period. Crucially, the prototype had not been unveiled in the CES exhibition hall. NEC showed it at a private company party.
The distinction matters.
Later historical summaries can easily describe the future TurboExpress as having been “unveiled at CES,” but the contemporary record is more precise. Journalists walking the exhibition floor could still report the machine only as a rumor because NEC’s demonstration occurred privately.
That small difference illustrates one of the difficulties of reconstructing trade-show history. CES was not limited to what stood inside numbered convention booths. Companies rented hotel suites, hosted private parties, arranged closed demonstrations, and showed unfinished hardware to selected journalists and business partners.
Some of the most consequential things at CES were technically happening outside CES.
The Device That Became the Game Genie
Another curious piece of gaming history appeared in contemporary Winter CES reporting.
The March 1990 issue of GamePro covered hardware from British developer Codemasters and Canadian company Camerica, including a device then referred to as the Power Pak. The concept allowed a player to place hardware between the NES and a game cartridge and alter elements of the game through entered codes.
The idea would become far more famous under another name: Game Genie.
Codemasters had created a device that could temporarily change how existing games behaved, allowing effects such as additional lives or other modifications without permanently changing the cartridge. Distribution arrangements shifted, and Galoob eventually became the American distributor for the product that became one of the most famous game accessories of the era.
The device would later become the center of a major legal battle with Nintendo, but at the beginning of 1990 it represented another theme running through CES: companies searching for ways to build businesses around Nintendo’s enormous installed base, whether Nintendo approved of those businesses or not.
Nintendo’s Unlicensed Problem Was Already on Display
That tension could also be seen in software.
Color Dreams displayed several independently produced NES games, including Raid 2020, Metal Fighter, Master Chu and the Drunkard Hu, and P’Radikus. Computer Entertainer explicitly noted that these games were neither sponsored nor endorsed by Nintendo.
ShareData was entering the same territory with Chiller, based on Exidy’s controversial arcade shooting game, along with announced versions of Crossbow and Death Race. Tengen likewise continued producing NES software independently of Nintendo, showing games including Xybots, RBI Baseball 2, Skull & Crossbones, and others.
The contrast inside the convention center was remarkable.
Nintendo’s licensed companies filled an enormous controlled environment, yet outside that official network other publishers were actively searching for technological and legal ways to sell software to the same audience.
Winter CES therefore captured not only Nintendo’s dominance, but resistance to the rules that accompanied that dominance.
Computer Games Refuse to Disappear
The rise of consoles did not mean computer gaming had become irrelevant.
Far from it.
Compute! found traditional computer publishers physically overshadowed but described the computer software showing as one of the strongest in recent CES history. Accolade brought projects including Day of the Viper, Strike Aces, and Gunboat. Other companies were experimenting with role-playing games, simulations, licensed entertainment, and increasingly sophisticated audiovisual presentation.
Computer Entertainer singled out several computer titles among its favorites, including Lucasfilm’s Loom, Origin’s Ultima VI, Cinemaware’s Wings, Accolade’s Gunboat, and Data East’s Batman: The Movie.
The boundaries between computer and console development were also becoming increasingly porous.
Computer Gaming World, writing after the show, described a two-way exchange in which successful computer properties were moving onto consoles while console games were increasingly appearing on computers. Licensing revenue from Nintendo, Sega, and NEC could support companies whose histories had been built around disk-based software. The magazine believed this cross-pollination would encourage improvements in interfaces, sound, and storage technologies.
This was one of the most important developments visible at Winter CES.
Video game history is often divided neatly into console and computer traditions. The actual industry floor was messier. Designers moved between platforms. Publishers licensed games across machines. Computer developers discovered new audiences on consoles, while console manufacturers looked toward computer games for genres and ideas that could broaden their libraries.
The walls were coming down.
A Show Caught Between Two Generations
What makes the January 1990 Winter CES so valuable to video game history is how many generations of technology existed beside one another.
The NES remained dominant.
The Sega Master System was still alive.
The Genesis was attempting to establish the 16-bit future.
The TurboGrafx-16 was trying to prove there was room for a third major console competitor.
The Game Boy was rapidly developing into a publishing platform of its own.
The Atari Lynx offered portable color.
NEC was privately demonstrating another color handheld.
Sega was rumored to have one in development.
CD-ROM was being used for experiments that resembled television production.
Telephone-based console gaming was being demonstrated.
Unlicensed NES manufacturers were challenging Nintendo’s control.
Third-party publishers were beginning to populate Sega and NEC hardware.
Computer companies were looking at the enormous console market and changing with it.
Even the terminology of the period reflects the uncertainty. Companies were still talking about “video games” and “computer games” as related but distinct businesses, while the products displayed in Las Vegas increasingly made that separation difficult to maintain.
Why the 1990 Winter CES Matters
The January 1990 Winter Consumer Electronics Show did not produce a single announcement that defines the event in the way some later game expos are remembered.
Its historical importance comes from something broader.
The entire structure of modern gaming was visible in unfinished form.
Nintendo demonstrated how enormous a console ecosystem could become. Sega showed how aggressive presentation, celebrity licensing, more powerful hardware, and third-party support might challenge that ecosystem. NEC placed CD-ROM technology alongside conventional cartridges while privately revealing a color handheld. Atari bet on portable hardware powerful enough to compete through technology. Computer developers increasingly crossed into console development. Codemasters was experimenting with the device that would become Game Genie. Publishers were already testing the limits of Nintendo’s control over its own machine.
Even the show’s rumors were meaningful.
When journalists heard whispers that NEC and Sega were developing color handheld systems, they were listening to the next stage of the portable console war before manufacturers were ready to discuss it publicly.
When Cinemaware placed an actress in front of a green screen at the Bally Hotel, it was demonstrating the cinematic ambitions that would become commonplace once optical media reached the mass market.
When Sega led visitors through themed rooms devoted to characters, sports, celebrities, and new licenses, it was showing that selling a console increasingly meant selling an identity.
And when Nintendo filled a huge portion of the West Hall with dozens of licensees, it demonstrated just how far the American video game industry had traveled since the crash of the early 1980s.
The 1990 Winter CES stood almost exactly on the boundary.
Behind it was the decade of Atari, the crash, the resurrection of the console market, the arrival of Nintendo, and the triumph of the NES.
Ahead were the 16-bit console wars, color handheld competition, CD-ROM gaming, increasingly cinematic presentation, new battles over licensing and intellectual property, and the gradual emergence of video games as one of the central entertainment industries of the 1990s.
For four days in Las Vegas, much of that future could already be seen.
You simply had to know where to look.
Sources & Further Reading
Consumer Electronics Association. The 1990 International Winter Consumer Electronics Show, CES Official Directory, January 6–9, 1990. Video Game History Foundation Library. https://library.gamehistory.org/subjects/216?filter_fields%5B%5D=published_agents&filter_values%5B%5D=Consumer+Electronics+Association&page=3
Signal Research. Game Player’s CES Videogame and Computer Game Guide, Winter 1990. 1990. Video Game History Foundation Library. https://library.gamehistory.org/repositories/2/archival_objects/14558
Badeaux, Marylou, and Celeste Dolan. Computer Entertainer 8, no. 10 (January 1990). https://upload.wikimedia.org/wikipedia/commons/9/9a/Computer_Entertainer_8-10.pdf
Badeaux, Marylou, and Celeste Dolan. Computer Entertainer 8, no. 11 (February 1990). https://commons.wikimedia.org/wiki/File:Computer_Entertainer_8-11.pdf
Signal Research. Game Player’s 2, no. 3 (March 1990). Video Game History Foundation Library. https://library.gamehistory.org/repositories/2/archival_objects/117
“ProNews Report: 1990 Winter CES.” GamePro, no. 8 (March 1990). RetroMags. https://www.retromags.com/magazines/usa/gamepro/gamepro-issue-8/
Nintendo of America. “CES Report: Highlights of the 1990 Winter Consumer Electronics Show.” Nintendo Power, no. 11 (March/April 1990). Frame Advance. https://frameadvance.net/sources/nintendo-power-011/
“What’s New in Computer Games? Special Report on the Winter Consumer Electronics Show.” Computer Gaming World, no. 68 (February 1990). https://mirrors.apple2.org.za/ftp.apple.asimov.net/documentation/magazines/computer_gaming_world/Computer%20Gaming%20World-1990_02_issue68.pdf
Computer Gaming World, no. 69 (March 1990). Winter Consumer Electronics Show report continuation. https://mirrors.apple2.org.za/ftp.apple.asimov.net/documentation/magazines/computer_gaming_world/Computer%20Gaming%20World-1990_03_issue69.pdf
“Winter CES: Disks in the Cartridge-Game Desert.” Compute!, no. 119 (April 1990). https://colorcomputerarchive.com/repo/Documents/Magazines/Compute%20%28Clean%29/Compute_Issue_119_1990_Apr.pdf
Beck, Kellyn. “The Journal Reporter.” Journal of Computer Game Design 3, no. 3 (February/March 1990). https://www.erasmatazz.com/library/the-journal-of-computer/jcgd-volume-3/volume-3-3-februarymarch.html
Amusement Press. Game Machine, no. 372 (January 15, 1990). https://onitama.tv/gamemachine/pdf/19900115p.pdf
Amusement Press. “NEC America Shows Its Handheld Vid At WCES ’90.” Game Machine, no. 374 (February 15, 1990). https://onitama.tv/gamemachine/pdf/19900215p.pdf
Billboard. Winter Consumer Electronics Show special coverage. January 13, 1990. https://www.worldradiohistory.com/Archive-All-Music/Billboard/90s/1990/BB-1990-01-13.pdf
Lazzareschi, Carla. “Searching for a Star Product.” Los Angeles Times, January 5, 1990. https://www.latimes.com/archives/la-xpm-1990-01-05-fi-283-story.html
Blankenhorn, Dana. “Winter CES to Examine HDTV Tests.” Electronic Media, January 1, 1990.
Television Digest. Pre-show reporting on the 1990 Winter Consumer Electronics Show and Nintendo’s planned exhibit space. October 1989. https://www.worldradiohistory.com/Archive-TV-Digest/80s/1989/Television-Digest-1989-10.pdf
The Strong National Museum of Play. Finding Aid to the Tengen, Inc. Records. Brian Sutton-Smith Library and Archives of Play. Includes 1990 Winter CES films, brochures, advertising material, photographs, and related records. https://museumofplay.org/app/uploads/2021/09/Finding-Aid-to-the-Tengen-Inc.-records_092016.pdf
Indiana Historical Society. O’Hara RCA/Thomson Company Collection, 1900–2013, 2006. See Box 76, Folder 7, “January 1990 Winter CES Press Event Information.” https://indianahistory.org/wp-content/uploads/ohara-rca-thomson-company-collection-190020132006.pdf
QuestBusters: The Adventurer’s Journal. Winter Consumer Electronics Show coverage, 1990. Discussed and documented by the Video Game History Foundation. https://gamehistory.org/tfw-a-twitter-bot-solves-a-video-game-mystery/
Video Game History Foundation. “TFW a Twitter Bot Solves a Video Game Mystery.” Video Game History Foundation. https://gamehistory.org/tfw-a-twitter-bot-solves-a-video-game-mystery/
“Squeezing the NES.” Wireframe, no. 34. Retrospective interview material with Philip and Andrew Oliver concerning their visit to the January 1990 CES in Las Vegas. https://magazines-static.raspberrypi.org/issues/full_pdfs/000/000/354/original/Wireframe34.pdf
“The Console Pioneers.” Retro Gamer, no. 290. Interview and oral-history material with the Oliver Twins, including recollections of Winter CES 1990. https://pocketmags.com/eu/retro-gamer-magazine/issue-290/articles/the-console-pioneers
VideoGames & Computer Entertainment. April 1990. Contemporary advertisements and coverage connected with products and companies appearing during the Winter CES period. https://gamehistory.org/tfw-a-twitter-bot-solves-a-video-game-mystery/
Codemasters. “History.” The Codemasters Archive. Material concerning Codemasters, Camerica, and the development of the device that became Game Genie. https://thecodemastersarchive.co.uk/history/