Kingdom Hearts IV Brings Back Characters From a Game That Literally Doesn't Exist Anymore - And That’s So On-Brand

The Trailer That Rewarded the Obsessed

The new footage, which aired during Nintendo’s June 10 showcase, showed Sora exploring Quadratum, the fictional Tokyo-inspired world first teased in the 2022 announcement. But the camera soon cut to a handful of faces that sent the series’ most devoted fans into a frenzy: Strelitzia, Ava, Sigurd, and most confusingly, Vali. These aren’t side characters from a forgotten cutscene. They are central figures in the “Lost Master Arc”, the narrative saga that Kingdom Hearts IV is supposed to continue.

Vali’s appearance is particularly head-scratching. In Dark Road, his story ended with his death. His resurrection or return in KH4 raises immediate questions about time travel, alternate timelines, or the series’ usual metaphysical gymnastics. The trailer also briefly showed Luxord, a mainline character from Kingdom Hearts II, but in a new form that seems tied to the mobile lore. For the uninitiated, the trailer is a puzzle box. For the initiated, it’s a validation of years of mobile-game grinding.

The Games You Can’t Play, but Must Know

Kingdom Hearts Union χ launched in 2016 as a free-to-play mobile prequel set centuries before the main series. Dark Road followed as an additional narrative mode within the same app, telling the backstory of a young Xehanort. Together, they formed the backbone of the “Lost Master Arc”, the overarching storyline that Kingdom Hearts III only hinted at and that KH4 is expected to resolve.

But as of 2024, both games are dead. The app was removed from iOS and Android stores, and the servers were shut down. The only way to access the story now is through an offline theater mode for Union χ that lets players watch cutscenes, and a converted standalone offline app for Dark Road that concluded its story in August 2022. These archival solutions exist, but they are not the same as playing the game. The narrative context tied to gameplay mechanics, the missions, the multiplayer raids, the drip-fed revelations, is gone. New players (or anyone who skipped the mobile era) are left with YouTube summaries or the bare-bones theater mode to understand why a dead character is suddenly alive in Quadratum.

So if you didn’t play these games before 2024, your current options are: (1) watch the offline theater mode cutscenes (no gameplay context), (2) find a YouTube summary, or (3) wait for Square Enix to release something that may never come. This creates a barrier that is unique in the industry: you cannot simply buy an older title and catch up. The games literally do not exist anymore.

The irony of the situation deepened during the same Direct, when Square Enix also announced it is delisting the Switch cloud versions of the mainline Kingdom Hearts series, with a full shutdown scheduled for June 9, 2027. Simultaneously, the company revealed native ports and a Kingdom Hearts Collection [I~III] bundle, coming on October 8, 2026, for Switch 2, PS5, Xbox Series X|S, and PC. So on the very day Kingdom Hearts IV pulled characters from a dead mobile game, Square Enix killed off the only way to play the series on Nintendo Switch, replacing it with a collection that won't arrive for months. It’s a pattern of creating and dismantling access to its own canon, all in one press release.

A Long, Painful History of Gatekeeping Lore

Kingdom Hearts has always gated essential plot points behind obscure hardware. To understand Kingdom Hearts III, players had to be familiar with Dream Drop Distance, Birth by Sleep, and 358/2 Days, none of which are numbered entries. But previous spin-offs survived on used carts and re-releases. Mobile games do not. Union χ and Dark Road have no console remaster. There is no bundle. There is no plan to bring them back. The only way to experience their full story was to have played them before they were delisted.

The mobile situation is more extreme than anything the series has done before. At least the GBA and DS games can still be emulated or purchased secondhand. Mobile games, by their nature, are tethered to online services. When those services die, the game dies with them. For Kingdom Hearts IV, this is not optional background lore, it is the foundation of the new saga. The “Lost Master Arc” is built on the back of a game that no longer exists in its original form.

What Does This Mean for Kingdom Hearts IV’s Audience?

Kingdom Hearts IV is aiming for a wider release than ever before. It is confirmed for a simultaneous launch on Nintendo Switch 2, PlayStation 5, Xbox Series X|S, and PC (both Steam and Epic Games Store). The audience is potentially massive. But the narrative is gated behind platforms that have been dead for years.

The fanbase reaction has been split. Some players are exasperated, pointing out that Square Enix is once again asking them to do homework for a game that no longer exists. Others find it charmingly on-brand, a stubborn commitment to continuity that borders on self-parody. Kingdom Hearts has always been a series that rewards devotion and punishes skipping entries. The mobile delisting is just the most extreme version of that philosophy.

Square Enix could eventually bundle the mobile cutscenes into a “story so far” update, or release a dedicated offline compendium. If Kingdom Hearts IV wants to be the series’ mainstream breakthrough, Square Enix must bridge this gap, likely with a cutscene compilation before launch. But right now, the game risks alienating players who didn’t have an app on their phone four years ago. The trailer was a love letter to the faithful. For everyone else, it was a reminder that, in the world of Kingdom Hearts, you are always two spin-offs behind.

The Kingdom Hearts Way

This is the defining paradox of the series. Kingdom Hearts IV looks like a gorgeous, ambitious game that wants to reach a new generation. But it is also a game that requires you to have played a mobile title that was shut down before its own sequel was announced. That contradiction is so absurd, so frustrating, and so utterly Kingdom Hearts that it almost feels intentional. Tetsuya Nomura built a franchise on elaborate cross-platform storytelling, and he is not about to stop now, even if the platforms themselves have crumbled. It’s infuriating. It’s endearing. It’s Kingdom Hearts. The man simply cannot help himself. And neither can we.