As the spiritual successor to Undertale created by Toby Fox, Deltarune adopts a "chapter-by-chapter release + free updates" model. Regarding when Deltarune will be updated, two chapters have been released so far, and the release schedule for the remaining chapters, as well as version iterations, are directly related to the advancement of the core storyline. If players do not pay attention to update times and version differences, they may miss out on key content due to platform restrictions or be unable to experience new mechanisms because of outdated versions.

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Chapters 1-4 of Deltarune will be simultaneously released on PC, Mac, PS4/PS5 on June 5, 2025, priced at $24.99, supporting a "one-time purchase + free subsequent chapters" model.

The first two chapters were initially released in 2018. Chapters 3 and 4 were originally planned to be released separately but have now been adjusted to a single update. The release dates for the subsequent chapters (Chapters 5-7) have not yet been announced, but Toby Fox has promised to shorten the development cycle.

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The version updates of Deltarune are highly tied to platform characteristics. The update on June 5th, which includes Chapters 1-4, will significantly expand the storyline and mechanics. It's necessary to choose the version based on hardware conditions and experience needs. The PC version is suitable for players who pursue high-quality graphics and MOD freedom, while the PS5 version emphasizes immersion and controller compatibility. Regardless of which version you choose, the core storyline and character development lines of Deltarune remain consistent across versions. It's recommended to back up your save files before updating to avoid data loss due to cross-platform transfers.