Kingdom Hearts 4 will feature fewer worlds than its predecessors, but each environment will boast a significantly higher level of detail, according to an interview with series director Tetsuya Nomura. These expansive, meticulously crafted areas are central to the game's narrative and thematic development.

Nomura's comments, made in an interview with Famitsu, indicate a shift in design philosophy for the upcoming title. Rather than populating the game with numerous, less complex locations, the development team is focusing on creating fewer, yet more immersive and visually rich worlds. This approach aims to deepen the player's experience within each distinct setting, allowing for more intricate storytelling and environmental design.

The interview also touched upon the game's setting, Quadratum, which was first glimpsed in the initial trailer. This new, seemingly realistic urban environment presents a stark contrast to the fantastical realms typically explored in the Kingdom Hearts series. Nomura suggested that Quadratum is not the only new world players will visit, but that the emphasis will remain on the quality and depth of each location rather than sheer quantity. The narrative will likely leverage these detailed environments to explore new themes and character arcs, building upon the established lore of the Kingdom Hearts saga.