is an episodic role-playing video game created by American indie developer Toby Fox. Set in a parallel universe to Fox’s 2015 hit Undertale, the game expands on its predecessor’s mechanics with a more complex party system and a narrative that deeply explores the relationship between the player and the protagonist . Setting and Premise
The story begins in Hometown, a peaceful suburban community populated primarily by monsters . Players control Kris, a quiet human teenager living with their adoptive mother, Toriel . While attempting to complete a school project with the local bully, Susie, the two fall into the Dark World—a surreal dimension where everyday objects like playing cards or chess pieces manifest as living beings called "Darkners" .
There, they meet Ralsei, a Dark World prince who reveals a prophecy: Kris, Susie, and Ralsei are the fabled "Delta Warriors" destined to restore balance by sealing "Dark Fountains" that threaten to cause an apocalypse known as "The Roaring" . Gameplay Mechanics
Combat System: The game uses a turn-based system with bullet-hell elements. Unlike Undertale, players manage a three-member party, allowing for strategic synergies in healing and attacking .
ACTing and Sparing: Players can resolve encounters peacefully by using the "ACT" command to bond with enemies, eventually allowing them to "SPARE" them .
Tension Points (TP): Dodging enemy attacks closely ("grazing") builds TP, a resource required to cast magic spells or perform special team actions . Deltarune
World Design: The game transitions between the exploration-focused "Light World" (Hometown) and dungeon-like "Dark Worlds" filled with puzzles and enemies . Development and Release History
Fox began conceptualizing Deltarune in 2012, even before Undertale . Because of the game's complexity, Fox transitioned from solo development to leading a small team . Release Date Chapter 1 October 31, 2018 Chapter 2 September 17, 2021 Chapters 3 & 4 June 4, 2025 Paid Release ($24.99) Chapter 5 Scheduled for 2026 Free Update Chapters 6 & 7 Free Update Themes and Narrative Depth
When Toby Fox released Undertale in 2015, it wasn't just a game; it was a cultural event. It redefined what an indie RPG could be, breaking the fourth wall with surgical precision and introducing a morality system that actively judged the player for their curiosity. For years, fans begged for more. In 2018, seemingly out of nowhere, Fox dropped Deltarune—Chapter 1. The internet broke.
But Deltarune is not Undertale 2. It is a parallel universe, a "what if," and a psychological horror dressed in the wool sweater of a Saturday morning cartoon. As of its latest release (Chapter 1 & 2), Deltarune has proven itself to be not just a follow-up act, but a deconstruction of choice itself. This article dives deep into the lore, mechanics, characters, and the burning questions that keep the fandom awake at night.
If you want one of these expanded into a longer post (e.g., deep-dive on lore, episode-by-episode walkthrough, character analysis, or fan theories), tell me which and I’ll write it. is an episodic role-playing video game created by
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While Deltarune is not a direct sequel, it uses parallel-universe versions of beloved Undertale characters.
These callbacks serve as emotional shorthand, but the characters have different histories and relationships. Toby Fox has warned fans not to assume they know what will happen next based on Undertale.
No Deltarune article is complete without addressing the iceberg of lore hiding beneath the cute surface.
The Knight: The main antagonist who creates the Dark Fountains. Who is the Knight? Is it the mysterious figure seen at the end of Chapter 2? Is it a new character? The most popular (and terrifying) theory is that it is Kris themselves. When they rip out the soul at night, are they going to create the next Fountain? Community & Mods
The Roaring: The apocalypse. If too many Fountains are opened, the balance breaks. The Titan's rise. The sky turns to "Roaring." Darkners turn into mindless beasts. Ralsei is terrified of this, which makes his suspicious eagerness to keep the party small and contained feel less like kindness and more like control.
Wing Gaster (The Royal Scientist): Undertale's forgotten character is everywhere in Deltarune. The "Goner Maker" intro? That’s likely Gaster speaking in his iconic cryptic typeface (Entry 17). The sound effects for the save points? Gaster’s theme. The general consensus is that Deltarune is a "world" Gaster created after falling into his CORE in Undertale. We are playtesters in a broken simulation.
| Feature | Description | |-------------|-----------------| | Turn-Based + Bullet Hell | Player chooses actions (Fight, Act, Magic, Item). During enemy turns, you control a heart (soul) to dodge projectiles in real time. | | Act / Mercy | Instead of killing, you can "Act" to pacify enemies (e.g., "Compliment," "Threaten"). When all enemies' Mercy% is high, you Spare them. | | TP (Tension Points) | Earned by dodging well. Used for special spells, team attacks, or healing. | | Pacify & Recruit | Most enemies can be spared and will later appear in a town hub. "Violent" routes are possible but shorter. | | Party System | Control Kris, Susie, Ralsei, and (in Ch.2) Noelle or Berdly in battle. |
Deltarune’s most chilling narrative device is its meta-commentary on player agency. Unlike Undertale, where "Frisk" was a blank slate for the player, Deltarune makes it painfully clear: You are a separate entity.
At the game's beginning, you are asked to "create a vessel." The game then discards that vessel, shoving you into Kris’s body instead. Throughout the game, characters comment on Kris acting "strange." At the end of Chapter 2, a horrifying sequence plays out: Kris forcibly rips the player’s control out of their chest (the red SOUL) and throws it into a cage, acting on their own for the first time.
This creates a profound conflict: Deltarune is a story about the tension between player choice and fate. The game’s opening text states: "No one can choose who they are in this world." Your choices may matter less than you think, but Kris’s rebellion suggests they are not happy about it.