Kingdom Hearts 4 is shaping up to tell a substantially larger story than Kingdom Hearts 3, with director Tetsuya Nomura revealing that the new game’s script has almost twice the volume of its predecessor. However, players should not interpret that statement as confirmation that Sora’s next adventure will take twice as many hours to complete.
The new information comes from an interview with Nomura and co-director Tai Yasue following the latest wave of Kingdom Hearts 4 announcements. Square Enix has recently revealed considerably more about the long-awaited sequel, including its Coco world, new characters, Quadratum’s role and additional details surrounding the game’s 2027 launch plans.
According to the developers, the Kingdom Hearts 4 script is slightly less than twice the size of Kingdom Hearts 3’s script. That is a significant increase, although script volume and total gameplay duration are two very different measurements.
The revelation nevertheless reinforces just how ambitious the sequel is becoming. It also follows a major period of renewed promotion for the series after Kingdom Hearts returned to D23 with an unusually prominent presence, ending a lengthy period in which substantial information about KH4 had been scarce.
Kingdom Hearts 4’s script is nearly twice the size of KH3’s
Nomura explained that the script volume for Kingdom Hearts 4 is just under twice that of Kingdom Hearts 3. He also indicated that he continued wanting to add more material before the development team effectively reached its limit.
That detail is arguably more important than attempting to convert script size directly into hours. A larger script can translate into additional cutscenes, conversations, character interactions, world-specific sequences and narrative moments woven into gameplay without necessarily doubling the time required to finish the game.
Therefore, claims that Kingdom Hearts 4 will automatically be an 80-hour adventure should be treated cautiously. Square Enix has not confirmed an 80-hour runtime, nor has it stated that the campaign itself is literally twice as long as Kingdom Hearts 3.
What the developers have confirmed is much more specific: the written scenario is dramatically larger.
That distinction matters for a franchise such as Kingdom Hearts, where lengthy cinematics, interconnected character arcs and increasingly complex lore have always occupied a major part of each mainline entry.
Why Kingdom Hearts 4 may need such a large story
There are already several reasons why KH4 could require considerably more narrative material.
Sora’s arrival in Quadratum represents a major departure from the environments that defined previous adventures. Moreover, the city is not simply functioning as another Disney world. It appears to have its own institutions, characters and rules that will play directly into the wider plot.
One particularly important revelation is the presence of the Dandelions, a group of Keyblade wielders connected to Quadratum’s government. Sora is expected to become involved with them, creating another narrative layer for Square Enix to develop alongside the Disney worlds and the larger Lost Master Arc.
Meanwhile, characters with connections to the χ era of Kingdom Hearts history are also becoming relevant. Sigurd and Vali are among the names entering the story, potentially requiring KH4 to introduce concepts that longtime players may recognize while simultaneously explaining them to newcomers.
Square Enix does not appear to expect every player to have experienced all of the older χ-related material. Consequently, Kingdom Hearts 4 needs enough narrative space to introduce these characters properly rather than assuming that everyone understands their history.
That alone could help explain part of the expanded script.
Kingdom Hearts 4 is becoming much more than another Sora adventure
The increased narrative scope is accompanied by a noticeable expansion in gameplay ideas.
Recent information has shown that Square Enix is experimenting with playable characters and mechanics that move beyond Sora’s conventional combat structure. King Mickey, for example, receives puzzle-oriented gameplay built around paper and origami transformations.
Battle4Play previously examined how Mickey’s unusual gameplay could reveal a broader design philosophy for Kingdom Hearts 4. Rather than simply giving every playable character a variation of Sora’s combat, Square Enix appears interested in allowing individual heroes to introduce fundamentally different mechanics.
Donald and Goofy are also expected to receive playable sections, giving the developers additional opportunities to change pacing and perspective throughout the adventure.
When combined with a much larger script, these systems suggest KH4 could alternate more frequently between major story sequences, exploration, combat and character-specific gameplay.
Coco is another sign of Kingdom Hearts 4’s larger ambitions
The recently revealed Coco world offers another example of the scale Square Enix is targeting.
Nomura and Yasue have described the world inspired by Pixar’s Coco as particularly expansive, with exploration and movement forming an important part of the experience. This is relevant because a larger script does not exist in isolation: Square Enix is simultaneously attempting to make individual worlds feel more substantial.
Coco’s confirmation also revived discussion surrounding an older alleged list of Kingdom Hearts 4 worlds. Battle4Play previously analyzed why Coco’s reveal made the Kingdom Hearts 4 world leak more interesting without actually proving it.
For now, unannounced worlds on that list should remain firmly classified as rumors. Nevertheless, Coco itself demonstrates that Disney and Pixar properties remain central to the sequel despite Quadratum occupying such an important position in the overarching narrative.
That balance could be another reason the script has expanded. KH4 must establish a new saga, develop its original characters, explain Quadratum, revisit older lore and still give individual Disney worlds enough narrative space to feel meaningful.
A bigger script does not confirm an 80-hour Kingdom Hearts 4
This is where the most important clarification surrounding Nomura’s comments becomes necessary.
Square Enix has not announced that Kingdom Hearts 4 takes twice as long to complete as Kingdom Hearts 3. The comparison concerns script volume.
A script can grow substantially without creating an equivalent increase in gameplay time. Longer conversations, additional cinematics or denser story sequences can add thousands of written words while producing a much smaller increase in total runtime.
Conversely, larger worlds and additional exploration could increase playtime without requiring proportionally more dialogue.
Until Square Enix discusses campaign length directly, there is no reliable way to calculate how many hours Kingdom Hearts 4 will require based solely on its script.
Still, a script approaching twice KH3’s size is meaningful. It indicates that Square Enix is allocating significant narrative space to this new chapter rather than treating the sequel as a straightforward continuation.
Kingdom Hearts 4 is targeting 2027
Another major development is that Square Enix remains confident about the game’s launch plans.
During D23, Nomura and Yasue reiterated that Kingdom Hearts 4 is planned for 2027. Famitsu reported particularly confident comments from the directors regarding the development schedule, with the team indicating that production is progressing well.
For primary-source context, readers can consult Famitsu’s full interview with Tetsuya Nomura and Tai Yasue, which covers the increased script volume, Coco, Quadratum and several other elements of the project.
The developers have also suggested that fans should not expect Square Enix to reveal everything immediately. After the substantial amount of information surrounding D23, another major round of world announcements may not arrive straight away.
That approach makes sense if the studio wants to preserve surprises throughout the remaining promotional campaign. Kingdom Hearts 4 still has numerous unanswered questions, particularly concerning its Disney worlds, Quadratum, the Dandelions and how characters from older parts of the mythology will fit into the Lost Master Arc.
KH4’s larger script could help newcomers understand its complicated lore
One of Square Enix’s biggest challenges is making the new story understandable without forcing players to experience every previous Kingdom Hearts release.
The franchise’s mythology extends far beyond Kingdom Hearts 1, 2 and 3. Important concepts have appeared across handheld games, mobile projects and stories connected to the χ era, creating an intimidating amount of background material for anyone returning after KH3.
Kingdom Hearts 4 will feature characters linked to that history. However, Nomura and Yasue have indicated that the game should properly introduce relevant figures instead of demanding complete prior knowledge from players.
That could make the larger script especially valuable. Rather than compressing important explanations into brief scenes, KH4 has room to establish characters and concepts within its own narrative.
It may also help Square Enix avoid one of the risks inherent in beginning a new story arc: relying so heavily on past lore that the opening chapter immediately becomes inaccessible.
Kingdom Hearts 4 is starting to reveal its real scale
For years, Kingdom Hearts 4 existed largely through its original announcement and speculation about Quadratum. The picture is now considerably clearer.
Coco has been revealed, Mickey’s experimental gameplay has been shown, Donald and Goofy are taking on larger playable roles, characters connected to older Kingdom Hearts history are entering the narrative, and Quadratum appears to have a much deeper social and political structure than initially expected.
Now, the revelation that Kingdom Hearts 4’s script is nearly twice the size of Kingdom Hearts 3’s provides another indication of how much material Square Enix is attempting to fit into the sequel.
It still does not tell us exactly how long Kingdom Hearts 4 will take to finish. An enormous script could produce more cutscenes and denser storytelling rather than an 80-hour campaign.
However, it does make one thing increasingly clear: Square Enix is not approaching Kingdom Hearts 4 as a small transitional chapter. Everything revealed so far points toward a major expansion of Sora’s story as the franchise moves deeper into its next era.
Creator of the website, Pokemon trainer by nature. Trying to report on everything related to the world of video games, series and movies. Yu-Gi-Oh is my weakness, collecting cards since the dawn of time.
