By the summer of 1989, four mutated turtles named after Renaissance artists were rapidly becoming some of the most recognizable characters in American popular culture. What had begun five years earlier as Kevin Eastman and Peter Laird’s independently published black-and-white comic had expanded into an animated television series, toys, clothing, and a merchandising phenomenon that seemed to grow larger every month.
Video games were an obvious next step.
The first major home console attempt arrived on the Nintendo Entertainment System as Teenage Mutant Ninja Turtles, a strange, ambitious, and notoriously difficult action game developed by Konami. It was not the cooperative arcade beat ’em up many players now associate with the earliest Turtle games. Instead, this was a single-player adventure that sent Leonardo, Donatello, Raphael, and Michelangelo across an interconnected version of New York filled with sewers, buildings, hostile streets, strange mutants, underwater hazards, and eventually the Technodrome.
The Japanese version appeared first. Nintendo’s own archive records Gekikame Ninja Den as having been released for the Famicom on May 12, 1989. The North American version followed in June, published not under the familiar Konami name but under its Ultra Games label.
For millions of children, it became their first chance to control the Teenage Mutant Ninja Turtles themselves.
From an independent comic to a Konami license
The partnership that produced the game had begun before Turtlemania reached its peak.
Eastman and Laird had created the Teenage Mutant Ninja Turtles in 1984, initially imagining them within the darker world of independent comics. By 1987, however, the characters were being transformed for a much younger audience through television and toys. That same year, Konami approached the creators about producing both home and arcade video games.
Eastman later recalled that he and Laird had learned important lessons from older comic creators who lost control of characters they had created. As TMNT licensing opportunities multiplied, they wanted approval over how the Turtles looked and how they were portrayed. According to Eastman, Konami accepted that arrangement and involved the creators rather than simply purchasing the right to use the characters.
That involvement mattered because there was no longer a single version of the Teenage Mutant Ninja Turtles. The original Mirage comics were rougher, darker, and more violent, while the television series gave the brothers different colored masks, introduced a more comedic personality, and surrounded them with villains and imagery designed for a children’s audience.
Konami’s first NES game ended up occupying the strange territory between those two worlds.
Why the box said Ultra Games
American players looking at the cartridge or box in 1989 did not see Konami’s familiar name prominently displayed. Instead, the publisher was Ultra Games.
Ultra was connected directly to Konami. During the NES era, Nintendo of America restricted licensed third-party publishers to a limited number of releases each year. Konami had far more games it wanted to bring from Japan to the growing American market, so Ultra Games provided another publishing label through which additional titles could be released.
The arrangement placed Teenage Mutant Ninja Turtles alongside games such as Metal Gear as part of Ultra’s increasingly recognizable NES catalog. The cartridge itself carried the product code NES-U2-USA, while surviving cartridge records identify Konami as the developer and Ultra Games as the North American publisher.
It was a business arrangement born from the unusual licensing environment surrounding Nintendo’s dominance of the late 1980s console market, but for young players it simply meant that one of the most anticipated licenses in the country appeared beneath the red and white Ultra logo.
Between the Mirage comics and the television show
The game immediately looked familiar without ever matching the cartoon completely.
Konami producer Charles Murakami has described the NES title as a mixture of the Mirage comics and animated series, with a particularly strong comic book influence. The North American box art itself was based on an alternate cover associated with Teenage Mutant Ninja Turtles No. 4, where the brothers appeared in the red masks associated with the original comics.
Inside the game, however, the Turtles wear the individually colored masks familiar to television audiences. Bebop and Rocksteady appear, linking the adventure directly to the animated series, while other creatures and situations seem much stranger to viewers who only knew the Saturday morning cartoon.
That combination helps explain why the game can feel unusual even within the later Konami TMNT catalog. It was produced at a moment when the public identity of the franchise was still being established. The television version had not completely replaced the comic book version in the minds of the people creating licensed material, so Konami drew from both.
The result is almost a snapshot of the Teenage Mutant Ninja Turtles while they were transforming from underground comic characters into children’s entertainment icons.
Four Turtles, but only one player
Rather than designing a straightforward side-scrolling action game, Konami created something considerably more complicated.
Players move through overhead areas representing streets and neighborhoods before entering buildings, sewers, caves, and other locations that shift the game into a side-scrolling perspective. Nintendo’s Japanese documentation divides the experience into three major types of play: surface areas, underground or interior areas, and underwater sections.
The four Turtles function as a team even though only one can be controlled at a time. Players can switch between Leonardo, Raphael, Michelangelo, and Donatello during the adventure, effectively turning the brothers into four separate reserves of health as well as four different fighting styles.
Their weapons give each Turtle a different reach. Leonardo uses his swords, Raphael his sai, Michelangelo his nunchaku, and Donatello his bo staff. Additional weapons such as shuriken and boomerangs can be collected, while some overworld sections allow the Turtles to drive their Party Wagon.
It created an unusual mixture of exploration, action, resource management, platforming, and character switching at a time when licensed games were frequently much simpler.
The differences between the brothers also created one of the game’s lasting quirks. Donatello’s long-reaching staff made him especially useful against dangerous enemies, while Raphael’s short range could make certain encounters much more difficult. Losing a Turtle therefore meant more than losing a life. It could remove an important tactical option from the player’s remaining journey.
Saving April, Splinter, and New York
The adventure begins with the Foot Clan threatening the Turtles and their friends. April O’Neil and Splinter become part of a larger struggle that eventually pulls the brothers into Shredder’s plans.
The game moves through a succession of urban areas, sewers, warehouses, rooftops, military installations, caves, and enemy strongholds. Bebop and Rocksteady appear early, but Konami did not restrict the enemy roster to familiar television characters. Players encounter chainsaw-wielding creatures, strange robots, mutant enemies, mechanical hazards, and other designs that contribute to the game’s unusual atmosphere.
The overhead sections distinguish it from the more linear action games that would later define Konami’s TMNT series. Players must determine which buildings to enter, locate objectives, travel through sewers, and eventually use the Party Wagon to navigate larger areas.
Even before the game reached American stores, Nintendo recognized that players might need help. Nintendo Power devoted a substantial feature to Teenage Mutant Ninja Turtles in its May/June 1989 issue, including maps and strategy for portions of the adventure. The game occupied ten pages and received cover treatment at a moment when the TMNT phenomenon was rapidly accelerating.
One portion of that adventure would soon become more famous than almost anything else in the game.
The dam that became a generation’s nightmare
Early in the adventure, the Turtles reach a dam threatened by explosives. To stop the Foot Clan’s plan, the player must swim through an underwater maze and disarm bombs before time expires.
The Turtles cannot attack while swimming. Instead, the player must navigate narrow passages while avoiding walls and electrically charged hazards that steadily drain health. A timer adds pressure, and several bombs must be reached before the mission ends.
It became one of the most remembered stages of the NES era.
The difficulty was not merely a judgment created decades later by retro gaming culture. Eastman remembered players approaching him and Laird at conventions and complaining about how hard the game was. He also admitted that he struggled with it himself and never managed to conquer the notorious underwater section despite repeated attempts.
That memory is important because it shows that the game’s reputation for difficulty formed almost immediately. Players were already associating TMNT with frustration while the franchise was still becoming a worldwide phenomenon.
The dam has since become so closely identified with the game that Konami referenced it when promoting Teenage Mutant Ninja Turtles: The Cowabunga Collection in 2022. Modern save, rewind, strategy, and watch features were presented partly as ways to help players overcome sections that had stopped them decades earlier.
Yet the dam was not the end of the challenge. Later stages grow considerably more demanding, culminating in an assault connected to the Technodrome and Shredder. Players who remember the underwater section as the game’s great obstacle sometimes forget that much of the adventure remained ahead of them.
A difficult game that was also a major hit
Modern discussions of Teenage Mutant Ninja Turtles often begin with its problems, but that perspective can obscure how successful the game actually was in its own time.
The Turtles were rapidly approaching the height of their popularity, and the NES was one of the most important entertainment systems in American homes. Combining the two created enormous commercial appeal. According to Game Informer’s later history of the franchise, the NES game had sold more than four million cartridges by the end of 1990.
Contemporary recognition was equally striking.
In the 1989 Nintendo Power Awards, readers selected Teenage Mutant Ninja Turtles as Best Overall Video Game of 1989. The magazine praised its mixture of challenge, graphics, sound, and the ability to control all four brothers. That reader vote is particularly revealing because it clashes sharply with the way the game is sometimes described in modern retrospectives.
The game was not universally praised. Period reviews differed in their assessments, and concerns about control, scrolling, and difficulty appeared even while the title was commercially successful. European reviewers were often considerably more enthusiastic, with several publications awarding the later Teenage Mutant Hero Turtles release high scores.
What the surviving reception demonstrates is that the game did not spend 1989 being regarded simply as a failure. It was popular, heavily promoted, widely played, commercially successful, and divisive.
Its later reputation condensed that complicated history into one memory: the water level was nearly impossible.
The historical record is much more interesting.
The other Teenage Mutant Ninja Turtles of 1989
Part of the NES game’s reputation also comes from what Konami did next.
Later in 1989, Konami released a completely different Teenage Mutant Ninja Turtles game for arcades. Instead of exploration, character switching, and careful platforming, the arcade game placed players directly into a side-scrolling street fight. Up to four people could play simultaneously, each controlling one Turtle.
It looked more like the animated television series, moved more quickly, and allowed friends to fight together. For many fans, that became the definitive video game version of the Turtles.
The contrast was enormous.
The NES game asked one player to explore, preserve the health of four characters, find routes through buildings and sewers, and survive precision hazards. The arcade game offered immediate cooperative combat.
The arcade formula proved enormously influential and became the foundation for much of Konami’s later TMNT output. When it came to the NES in 1990, it was renamed Teenage Mutant Ninja Turtles II: The Arcade Game, permanently turning the original 1989 adventure into the first chapter of an NES series it had never originally been designed to begin.
That sequel was followed by Teenage Mutant Ninja Turtles III: The Manhattan Project, while Konami expanded the franchise across the Game Boy, Super Nintendo, Sega Genesis, and additional arcade hardware.
The strange first NES adventure had opened the door.
The music behind the sewers
Like many games of its era, Teenage Mutant Ninja Turtles does not contain the detailed staff credits modern players would expect, leaving parts of its development history difficult to reconstruct.
Music researchers have been able to identify at least part of the team. Composer Jun Funahashi later confirmed that he created approximately half of the soundtrack, although he could no longer remember every other composer involved. Hidenori Maezawa was responsible for sound programming.
The game’s soundtrack does not simply reproduce music from the television show. Instead, much of it is original Konami material designed around the changing environments. The underwater sequence even changes its musical intensity as the player’s remaining time decreases, reinforcing the panic created by the bomb countdown.
That music became another part of the game’s identity. Even players who remember struggling with its controls or level design often recognize its title, overworld, sewer, and underwater themes immediately.
Konami’s lost paperwork comes back to light
For decades, historians trying to understand the creation of games like Teenage Mutant Ninja Turtles faced a familiar problem. NES cartridges rarely contained full credits, development studios did not routinely preserve material for public study, and internal documents remained inaccessible.
That changed dramatically with the release of Teenage Mutant Ninja Turtles: The Cowabunga Collection in 2022.
Konami and Digital Eclipse assembled thirteen classic TMNT games and supplemented them with what became an unusually deep digital archive. Konami advertised previously unseen concept artwork, sketches, manuals, and development documents pulled from its own files. Digital Eclipse says the collection contains more than one thousand pages of original Konami design documents.
For the 1989 NES game, those materials are especially valuable. They allow players and historians to look beyond the finished cartridge and examine surviving evidence from the process that created it.
Concept drawings, enemy designs, production material, advertisements, manuals, and other documents now place a game once remembered largely through childhood experience into a much larger historical record.
It is an unusual second life for an NES title. The game is not merely playable again. Portions of the archive behind it are now available for study.
From Gekikame Ninja Den to a worldwide franchise
The first TMNT NES game also documents how quickly the property crossed international boundaries.
Japan received Gekikame Ninja Den in May 1989. North America received Teenage Mutant Ninja Turtles under Ultra Games shortly afterward. Europe later received the game as Teenage Mutant Hero Turtles, reflecting the alternate branding used for the franchise there.
Computer versions carried the adventure onto additional systems, while Konami continued producing new Turtle games in dramatically different styles.
Within only a few years, the company had moved from the exploration-heavy original NES game to cooperative arcade brawlers, Game Boy adventures, The Manhattan Project, Turtles in Time, The Hyperstone Heist, and Tournament Fighters.
The scale of that catalog makes it easy to view the first game merely as an awkward beginning.
It deserves more than that.
Why the first TMNT game still matters
Teenage Mutant Ninja Turtles is remembered because it is difficult, but difficulty is only part of its history.
It arrived at the exact moment when Eastman and Laird’s independent comic creation was becoming a mass-market phenomenon. It preserved elements from both the Mirage comics and the animated series because the identity of the franchise had not yet hardened into one familiar version. It appeared under Ultra Games because of the business rules governing Nintendo’s American market. It experimented with overhead exploration, side-scrolling action, underwater movement, vehicle travel, multiple playable characters, and resource management rather than simply turning the Turtles into another conventional platform game.
It also sold millions of copies.
Children argued about which Turtle to use, memorized sewer routes, sacrificed injured brothers to preserve healthier ones, studied maps in Nintendo Power, and repeatedly swam back into a dam filled with electrified obstacles because the countdown had reached zero again.
Some eventually reached Shredder. Many did not.
Konami would soon create Turtle games that were easier to understand, easier to play with friends, and more closely aligned with the cartoon that had conquered children’s television. Those games would often receive more affection from later generations.
The 1989 NES game remains something different. It captures the Teenage Mutant Ninja Turtles before the formula had been perfected, when Konami was still figuring out what a Turtle video game should be and the characters themselves were still caught between underground comics and Saturday morning television.
More than four million cartridges carried that experiment into homes.
For all its frustrating jumps, punishing enemies, strange mutants, lost Turtles, and one unforgettable swim through an electrified dam, Teenage Mutant Ninja Turtles became the beginning of one of the most enduring relationships between a comic book property and a video game company.
Before Turtles in Time, before The Manhattan Project, and before countless players crowded around four-player arcade cabinets, there was a gray NES cartridge with the Ultra Games logo on the box.
That was where Konami’s Turtle era began.
Sources & Further Reading
Ultra Games. Teenage Mutant Ninja Turtles: How to Play. NES-U2-USA. Buffalo Grove, IL: Ultra Games, 1989. https://www.gamingalexandria.com/highquality/NES/Teenage%20Mutant%20Ninja%20Turtles/Teenage%20Mutant%20Ninja%20Turtles%20-%20Manual%20%28Searchable%29.pdf
Nintendo Co., Ltd. “VC 激亀忍者伝 [Gekikame Ninja Den].” Wii Virtual Console Archive. https://www.nintendo.co.jp/wii/vc/vc_gkn/vc_gkn_01.html
Nintendo of America. “Teenage Mutant Ninja Turtles.” Nintendo Power, no. 5, March/April 1989, 52–55. https://fliphtml5.com/zrdmcs/evvb/
Nintendo of America. “Teenage Mutant Ninja Turtles.” Nintendo Power, no. 6, May/June 1989. https://www.retromags.com/magazines/usa/nintendo-power/nintendo-power-issue-6/
Nintendo of America. “Nintendo Power Awards ’89.” Nintendo Power, no. 12, May/June 1990. https://dokumen.pub/nintendo-power-issue-012-may-june-1990-12nbsped.html
“Nintendo Licensees Show Games; New Licensees Announced.” Computer Entertainer 7, no. 10 (January 1989): 9. https://upload.wikimedia.org/wikipedia/commons/c/cc/Computer_Entertainer_7-10.pdf
“Nintendo Software.” Computer Entertainer 8, no. 5 (August 1989): 11. Video Game History Foundation Library. https://archive.gamehistory.org/item/f7bfc08b-0206-481f-82b5-05d50a7140e5
“1989 Computer Entertainer Awards of Excellence Announced.” Computer Entertainer 8, no. 10 (January 1990): 4. https://upload.wikimedia.org/wikipedia/commons/9/9a/Computer_Entertainer_8-10.pdf
“Electronic Gaming Review Crew: TMNT.” Electronic Gaming Monthly, no. 4 (November 1989): 10. Video Game History Foundation Library. https://library.gamehistory.org/repositories/2/archival_objects/628
Electronic Gaming Monthly. “Best and Worst of 1989.” No. 5, December 1989. Video Game History Foundation Library. https://library.gamehistory.org/repositories/2/archival_objects/8767
Konami. Konami Advertising Sales Binder. 1991. Mark Flitman Papers, Video Game History Foundation Library. https://library.gamehistory.org/repositories/2/archival_objects/9266
Konami Digital Entertainment. “13 Iconic TMNT Games, One Shell of a Time: KONAMI’S Teenage Mutant Ninja Turtles: The Cowabunga Collection Is Available Now.” August 30, 2022. https://www.konami.com/games/us/en/topics/2029/
Konami Digital Entertainment. “Teenage Mutant Ninja Turtles: The Cowabunga Collection.” https://eu-support.konami.com/hc/en-gb/articles/9648546430103-Teenage-Mutant-Ninja-Turtles-The-Cowabunga-Collection
Digital Eclipse. “Teenage Mutant Ninja Turtles: The Cowabunga Collection.” https://www.digitaleclipse.com/games/tmnt
Nintendo. “Teenage Mutant Ninja Turtles: The Cowabunga Collection.” Nintendo Switch. https://www.nintendo.com/us/store/products/teenage-mutant-ninja-turtles-the-cowabunga-collection-switch/
Murakami, Charles, and Chris Kohler. Interview on Teenage Mutant Ninja Turtles: The Cowabunga Collection. Nintendo Everything, 2022. https://nintendoeverything.com/interview-teenage-mutant-ninja-turtles-the-cowabunga-collection-konami-digital-eclipse/
Shea, Brian. “Turtle Power!” Game Informer, May 1, 2024. https://gameinformer.com/feature/2024/05/01/turtle-power
Thorpe, Nick. “The History of Teenage Mutant Ninja Turtles.” Retro Gamer, no. 241 (2023): 18–27. https://pocketmags.com/us/retro-gamer-magazine/issue-241
Regan, Matt. “Nintendo Review: Teenage Mutant Hero Turtles.” Mean Machines, no. 1 (October 1990): 62–64. https://archive.org/details/mean-machines-01
Caswell, Mark. “Teenage Mutant Hero Turtles.” The Games Machine, no. 32 (July 1990): 28–29. https://archive.org/details/the-games-machine-32
“Teenage Mutant Hero Turtles.” Raze, no. 2 (December 1990): 47. https://www.outofprintarchive.com/catalogue/raze/Raze2.html
Slasher Quan. “Pro Classics: Teenage Mutant Ninja Turtles.” GamePro 3, no. 3, issue 20 (March 1991): 28–29. Video Game History Foundation Library. https://library.gamehistory.org/repositories/2/digital_objects/6695
NesCartDB. “Teenage Mutant Ninja Turtles.” Accessed October 27, 2026. https://nescartdb.com/profile/view/331/teenage-mutant-ninja-turtles
NES Directory. “Teenage Mutant Ninja Turtles.” Accessed October 27, 2026. https://nesdir.github.io/EE921D8E_USA.html
Video Game Music Preservation Foundation. “Teenage Mutant Ninja Turtles (NES).” Accessed October 27, 2026. https://www.vgmpf.com/Wiki/index.php?title=Teenage_Mutant_Ninja_Turtles_%28NES%29
MobyGames. “Teenage Mutant Ninja Turtles.” Accessed October 27, 2026. https://www.mobygames.com/game/6932/teenage-mutant-ninja-turtles/
Farago, Andrew. Teenage Mutant Ninja Turtles: The Ultimate Visual History. Revised and expanded ed. San Rafael, CA: Insight Editions, 2024. https://insighteditions.com/products/teenage-mutant-ninja-turtles-the-ultimate-visual-history-expanded
VGC. “Review: TMNT The Cowabunga Collection Sums Up the Era in a Half-Shell.” 2022. https://www.videogameschronicle.com/review/tmnt-the-cowabunga-collection/
Orland, Kyle. “TMNT Cowabunga Collection Review.” Ars Technica, August 2022. https://arstechnica.com/gaming/2022/08/tmnt-cowabunga-collection-review-a-90s-dream-a-few-months-too-late/