Beyond the Keyblade: Predicting the Next Frontiers of Kingdom Hearts 4

For over two decades, the Kingdom Hearts franchise has occupied a singular space in the video game industry. It is a bizarre, heartfelt, and occasionally labyrinthine experiment that marries the high-fantasy mechanics of Square Enix’s Final Fantasy series with the sprawling, iconic narrative library of The Walt Disney Company. As fans look toward the highly anticipated Kingdom Hearts 4, the question of which Disney-owned properties will make the cut remains the central point of community speculation.

Square Enix has never established a consistent "rulebook" for world representation. In the past, the series has fluctuated between direct adaptations of film plots—as seen in the original Kingdom Hearts’ retelling of Aladdin or Mulan—and the more experimental, "sequel-style" narrative approach seen in Kingdom Hearts 3, which used the setting of San Fransokyo to craft an original chapter for the Big Hero 6 cast. With the franchise entering a new saga, the potential for creative expansion is greater than ever.

A Chronology of Collaboration: From Agrabah to the Land of the Dead

The history of Kingdom Hearts world-building is a timeline of evolving ambition. Early titles relied heavily on the nostalgia of the Disney Renaissance. The original game functioned as a highlight reel of 1990s animation, inserting Sora, Donald, and Goofy into the familiar beats of Tarzan or The Little Mermaid.

As the series matured, the developers began to experiment with the medium. Kingdom Hearts 2 saw the return of Agrabah, but rather than retreading the original film, it adapted the direct-to-video sequel, The Return of Jafar. This marked a turning point: the games were no longer just vehicles for retelling stories; they were becoming secondary narrative hubs for the Disney multiverse.

By the time Kingdom Hearts 3 arrived, the formula had shifted again. The game focused on large, open-world environments that allowed for greater player agency. We saw the inclusion of Toy Story’s "Toy Box," an original story set within the established lore of the films, which allowed the game to bypass the fatigue of "re-watching" a movie and instead allowed players to participate in an interactive adventure.

Current trailers for Kingdom Hearts 4 suggest this trend will continue. We have already seen confirmation that Sora will traverse the vibrant, ethereal Land of the Dead from Pixar’s Coco, while Mickey Mouse is set to explore a surreal, papercraft storybook world. Meanwhile, footage of Donald and Goofy seeking out Hades suggests that the Olympus Coliseum—a staple of the franchise—will return to serve as a hub for competitive combat.

Potential New Horizons: Six Worlds Fans Want to See

While the confirmed locations are exciting, they leave significant room for expansion. Based on current cultural footprints and thematic compatibility with the series’ core focus on the heart, light, and darkness, here are six worlds that would be perfect additions to the next installment.

1. Moana

Moana is perhaps the most glaring omission from the recent history of the series. Given the franchise’s successful (if divisive) history with seafaring mechanics in Pirates of the Caribbean, Moana offers a chance to refine the "voyaging" gameplay. With the recent release of its sequel and the cultural resonance of the original, a Moana world could offer a vibrant, oceanic open world. Boss battles against the crab-like Tamatoa or the fire-demon Te Kā are practically pre-rendered for the Kingdom Hearts engine.

2. Encanto

While Encanto lacks a traditional villain, its narrative focus on familial insecurity, hidden trauma, and the weight of expectations aligns perfectly with the psychological depth of Kingdom Hearts. The Madrigal "Casita" is a treasure trove for level design. Each family member’s room acts as a distinct, liminal space that could host unique gameplay challenges, from shifting, shapeshifting walls to weather-based platforming in Pepa’s room.

3. Frozen 2

Arendelle in Kingdom Hearts 3 was widely criticized for keeping the player at arm’s length from the film’s central conflict. Frozen 2 offers a much more action-oriented template. An enchanted forest filled with corrupted elemental spirits provides a natural excuse for Heartless to appear, and the journey to Ahtohallan would give Sora a meaningful role to play in the story, rather than just being a spectator.

4. Zootopia

As a massive global success, Zootopia offers a cityscape that could rival the verticality of KH3’s San Fransokyo. The most compelling aspect of this inclusion would be the "morphing" mechanics. Just as Sora became a lion in the Pride Lands, seeing his design shift to accommodate the anthropomorphic world of Zootopia would be a highlight.

5. Toy Story (Continued)

"Toy Box" was arguably the high point of Kingdom Hearts 3. With five Toy Story films now in existence, there is no shortage of locations to explore. A return to this world, perhaps focusing on a new original story that reunites the remaining toys, would satisfy fans who felt the first visit ended on a cliffhanger.

6. Star Wars: The Galaxy Far, Far Away

The "holy grail" of fan theories is the inclusion of Star Wars. The 2022 announcement trailer featured a brief, 10-second shot of a forest that appears to contain the foot of an AT-ST. If this proves to be the Moon of Endor, it marks a monumental shift. The prospect of wielding a Keyblade-lightsaber hybrid is the kind of high-concept fan service that has sustained this series for a quarter-century.

Worlds That Should Remain Lost in Darkness

Not every property is suited for the Kingdom Hearts treatment. Some worlds have simply overstayed their welcome or presented design challenges that the series has yet to overcome.

• The Little Mermaid (Atlantica): This world has already been subjected to both three-dimensional combat and rhythm-based musical mini-games. There is no new ground to cover here; the mechanics are inherently restrictive, and the narrative has been fully exhausted.
• Pirates of the Caribbean: While KH3 handled this world well, it feels like it has reached its logical conclusion. The "uncanny valley" effect of mixing photorealistic human actors with cartoon characters like Sora is a hurdle that feels increasingly dated.
• Aladdin (Agrabah): Having appeared in almost every iteration of the franchise, Agrabah is the definition of "seen it all." Sora has fought Jafar enough times; it is time for the series to move on to fresh locations.
• Tron: While the digital aesthetic is a staple of the series, the Grid feels cold compared to the warmth of other Disney worlds. Its sterile, repetitive geometry offers little in the way of visual or gameplay variety compared to newer, more imaginative properties.

Implications for the Future of the Franchise

The selection of these worlds carries significant implications for the future of Square Enix’s relationship with Disney. As the series moves forward, it is clearly aiming for a blend of high-grossing modern blockbusters and classic nostalgia.

The primary challenge for Kingdom Hearts 4 will be integration. As seen with the Big Hero 6 and Toy Story worlds, the most successful levels are those where the game is allowed to tell an "original" story rather than simply playing the role of a digital narrator for an existing film. By prioritizing world-building over passive retellings, Square Enix can ensure that Kingdom Hearts 4 feels like a genuine expansion of the Disney multiverse rather than a museum of past cinematic hits.

As fans wait for further details, the community consensus is clear: they want innovation. Whether it is through the lightsabers of Star Wars or the magical realism of Encanto, the future of the franchise depends on its ability to keep the "Kingdom" feeling both familiar and refreshingly new.