I Know What This Deltarune Prompt Is For | An Addendum

Summary

The creator expands on a theory about Deltarune’s blood-type details and why the game refers to “Side B.” The video is explicitly speculative, connecting Deltarune’s route structure to games and themes that may have influenced Toby Fox.

Influences and route labels

The creator argues that Fox may be strongly influenced by Yoko Taro, particularly by Drakengard and its A–E endings. They point to Fox’s interview with Taro and suggest that the “Side A/Side B” terminology may be a deliberate clue.

The video also compares Deltarune’s possible routes to the A–D sides of the Undertale vinyl release, interpreting the tracks on each side as possible thematic hints about future routes. Other proposed influences include Moon RPG, whose ending encourages the player to put the game down, and Irisu Syndrome, which plays with characters and events crossing the boundaries of a game window.

Proposed route structure

• Neutral route: The creator predicts that this route will always loop, perhaps with an especially grim opening scene appearing on a later playthrough. As in Undertale, players may need to complete a neutral experience before reaching a more ideal ending.
• Side A — True Pacifist: This is imagined as Deltarune’s best outcome, potentially involving the characters crossing beyond the game. Its themes may echo Moon RPG: leaving the game behind while carrying its art and meaning into life.
• Side AB — Abandoned Weird Route / “True Snowgrave”: The creator speculates that stored game flags for abandoning the Weird Route will matter later, possibly leading to Noelle using Snowgrave herself. Carrying the Thorn Ring forward may be part of this route.
• Side B — Weird Route: The creator treats this as the established route label, supported by references to “Side B” in the game and familiar side-label conventions from cartridges and vinyl records.
• Route C — Sword Route: The creator predicts that making the Twisted Sword will require the Thorn Ring and sacrifices involving the party. The sword could let Kris break boundaries while reducing the player’s control over them, separating Kris from the player’s influence.
• Route D — A still darker route: The creator reads the final tracks on the Undertale vinyl’s Side D as a progression from tragedy and hope to the most difficult, violent fights. They predict a route requiring highly specific, disturbing choices, potentially beginning with the vessel-creation prompts.

Other theories and imagery

The creator suggests that Noelle’s grief and preference for fantasy over reality could lead her to create a Dark World or even trigger the Roaring. They also connect the Holidays, Snowdin, and the always-snowing setting to this possibility.

The Thorn Ring is interpreted as a symbolic “red pen” or tool of control. It may enable access to routes and represent contracts, player influence, and the capacity to create chaos.

The creator reads the apple-core scene and recurring seed imagery as possible foreshadowing of Kris’s grim intentions, while acknowledging that these images may be symbolic rather than literal.

They also point to possible connections with Madoka Magica: Rebellion, especially its themes of love across time and attempts to save someone. The creator stresses that any parallel in Deltarune may be familial rather than romantic.

People and sources referenced

People and channels: Toby Fox, Yoko Taro, Evan (on Twitter), and Trans Witch Reviews.

Games and other works: Undertale, Deltarune, Drakengard 1, Drakengard 3, NieR Replicant, NieR: Automata, Moon RPG, Stray Children, Ribbit (a fan game), Irisu Syndrome, and Madoka Magica: Rebellion.

The creator also recommends looking into Device Theory and an Irisu Syndrome Explained playlist.