KH4's Script Is Nearly Double — A Handheld Storage Warning
Kingdom Hearts 4’s script is nearly twice the size of Kingdom Hearts 3’s, and Tetsuya Nomura says he was already “pushing it” before making cuts. For handheld players, that’s not just a lore headline — it’s a storage warning. Every additional line of dialogue means more recorded audio, more localized files, and more compressed cutscenes competing for space on a Steam Deck SSD or whatever portable hardware Square Enix eventually targets.
Nomura also confirmed the Japanese voice cast has finished recording while the English cast is 60–70% done. That’s a lot of audio in the pipeline — and a strong reminder that modern RPGs are often measured in gigabytes before they’re measured in hours.
Double the Script, Double the Storage Math
Spoken dialogue is the most storage-hungry part of any narrative RPG. Text compresses to almost nothing; voice files don’t. When you factor in multiple language packs and higher-quality audio, a script this much bigger can push install sizes well past what a Steam Deck’s internal storage wants to dedicate to one game. Kingdom Hearts 3 reached the original Switch only as a cloud streaming version — a strong signal that Square Enix didn’t see a native install as practical. A story nearly twice as long doesn’t automatically double the install, but it absolutely guarantees the audio layer weighs more — and weight is the thing handheld players feel first.
Fewer Worlds Won’t Save the Battery
Nomura’s comment about being selective with Disney worlds might sound like a concession to portable hardware, but it’s really about pacing. Fewer worlds means fewer giant asset packs, which helps with load times and install size — yet the cutscenes and dialogue are where the battery drains. Long rendered dialogue scenes keep the GPU and CPU awake instead of letting the device drop into a low-power state. So while a tighter world count is good news for storage, the doubled script means handheld players should budget for more charging stops, not fewer.
The real takeaway: watch the download size, not the word count. If Square Enix ever ships a native portable version, the install footprint will reveal more about its portable-friendliness than any script-length interview ever could.