サービス終了を控える「うたわれるもの ロストフラグ」，物語を振り返るストーリー版「うたわれるもの ロストフラグ 物語記録保存領域」制作決定

アクアプラスは本日（2026年4月13日），スマートフォン向けRPG「うたわれるもの ロストフラグ」のサービス終了にあわせて，本作の物語を振り返るストーリー版「うたわれるもの ロストフラグ 物語記録保存領域」の制作を決定したと発表した。

gu4n's review of Monochrome Mobius: Rights and Wrongs Forgotten | Backloggd

<em>Monochrome Mobius: Rights and Wrongs Forgotten</em> expands the world of <em>Utawarerumono</em> in a way that feels unnecessary on paper, but welcome in practice. It's a prequel to the <a rel='nofollow' target='_blank' href='https://backloggd.com/series/utawarerumono/'>existing trilogy</a>, exploring Oshtor's past before his rise to Imperial General of the Right of Yamato, a powerful empire inspired by regions surrounding the Sea of Okhotsk. Whereas previous titles blended lengthy visual novel segments with accessible strategy, this entry shifts fully into a turn-based RPG with sprawling fields and ample quests. It not only revisits a world fans have become intimately familiar with, it also expands the characters' backgrounds and lore.<br><br>The game retains what defines the series - nuanced character writing, strong musical direction, and distinctive artwork - but channels it succesfully through a different genre, a shift I personally prefer over the earlier strategy format. As much as I welcome its exploration of Oshtor, Mikazuchi and Munechika's backgrounds and contribution of the overarching lore, the story never quite reaches the emotional of political heights of its predecessors. The game is primarily for fans of the series; if you weren't invested in the world through the previous trilogy, the inoffensive but not particularly noteworthy combat system won't draw you in now. As a fan, I still loved every minute of my 37-hour playthrough, and I won’t make the mistake of overlooking <a rel='nofollow' target='_blank' href='https://backloggd.com/games/utawarerumono-past-and-present-rediscovered/'>its sequel</a> again.

Utawarerumono: Mask of Deception - Wikipedia