Why are 358/2 Days and Re:coded movies in the collections?
When the HD collections were assembled, two entries posed a unique problem. Kingdom Hearts 358/2 Days (DS, 2009) and Kingdom Hearts Re:coded (DS, 2010) were built around the Nintendo DS’s two screens and touch controls, and a faithful remake would have meant redesigning them from the floor up. Square Enix’s solution was preservation by film: inside HD 1.5 ReMIX, 358/2 Days is presented as “HD remastered cinematics,” a chapter-by-chapter theater of its story scenes, re-rendered in high definition with full voice work the DS could not carry. Re:coded received the same treatment in HD 2.5 ReMIX.
These are not lazy inclusions. The Days theater runs at feature length, re-staging every story scene of Roxas’s year in Organization XIII, with text interludes carrying the connective tissue of the missions. The Re:coded theater goes further and adds scenes that were never in the DS game, closing with Maleficent and Pete discussing the Book of Prophecies, a deliberate wire connecting the oldest storyline in the series to the χ era then unfolding on phones.
The cost is real, and this page records it plainly: the gameplay of both titles exists only on DS cartridges. Days’ Mission Mode, its four-player multiplayer, and Re:coded’s stat-matrix system and tag-mode features have never been ported anywhere. In the modern collections you can watch these two stories, but you cannot play them, and a complete shelf of the series still requires the original hardware era to be represented.