Deltarune

* To know more, see:

Deltarune Wiki

* so... it's been a while.

This article contains information that is from an AU with multiple stories that has at least one story completed.

Stories that have been completed:
Chapter 1
Chapter 2

*kid, listen. there are spoilers on this page; be careful when you're reading.

*you don't want a bad time, do ya?

To access just the story, click here.

This is intended for people who have completed UNDERTALE.
— Text on Deltarune.com

Deltarune (stylized as deltarune) is an in-dev computer game by Toby Fox. Chapter 1 was released October 31, 2018, and chapter 2 was released September 17, 2021. Three more chapters have been announced, with the third and fourth being close to complete. The game's chapter select screen suggests at least two more chapters beyond that are planned, for a total of at least seven.

The story so far follows Kris, the controllable silent protagonist, and Susie, a violent monster, living in Hometown. The not-so-ideal duo at first stumble upon a "Dark World" inside their school's storage closet, and meet Ralsei—an Asriel lookalike who joins the party on their quest to seal a Dark Fountain that can cause damage to the world.

Trivia[]

Despite the confirmation that Deltarune was indeed an AU of Undertale, it has also been suggested that there may be connections between the two games.^[1]
Deltarune is the only official Undertale AU.
Despite only having five chapters announced (including the two already released) and the menu screen indicating seven, the game's files contain logo animations for an eighth, ninth, and tenth chapter, making the planned length of Deltarune unclear.
Deltarune has been in development since before Undertale, with a few music tracks in Undertale having originally been intended for Deltarune.^[2]

References[]

↑ It's a different world that might even have different rules. That doesn't mean there will be no connections at all though. - Deltarune FAQ
↑ That game… I ended up repurposing a few of the songs from it for Undertale. For example, “Heartache” was originally called “Joker Battle” and “Bonetrousle” was originally the main battle theme. - Toby Fox, Indie World

v·d·e Basic Change
Story Overhaul	AI-Tale • AllTale's • AsylumTale (Blackroses113) • BioTale • Delta Experiment • Delta Memory • Deltarune: Hopeless Experiment • Faithtale • Haunted Hearts • Hotarubitale • ImmortalTale • Kenotale • Nightmare Story • Omega Timeline: Poppy's Story • Reapertale • SealTale • Summontale • The Great Detective Papyrus Mysteries • Underbeats • Underblank • UnderMafia • Undertale - No Mercy • UnderWAR
Theme Overhaul	Applefell • ArsonFell • BT!Elatrednu • Caninetale • Crimsontale • DanceFell • Dancetale • Deltafell • Desperate Times • Farmtale • Flowerfell • GhostTale • Hardtale • Humantale • Hungertale • If Undertale had a Flirting Route • If Undertale Was Realistic • Infinitetale • Kiwitale • LanternDay • Littletale • Lockfell • Magitale • Murdertale • Negatale • Negativetale • Oceantale • Outertale • OW!Underfell • PS!Outertale • RUAM! Underfell • Sans Hates Women • Taoyuan-Tale • TC!Underfell • Teatale • The Worst Fucking Undertale Fanfiction • Under Sleep • Under(her)tail • Undercooked • Underfail • Underfell • Underfell (Kaitogirl) • Underfell GG • Underflub • Underfoil • Underforest • UnderHeat • UnderLove • Underpants • UnderRacer • Undersail • Undertail • Undertale Rewritten by AI • Undertale The Musical • Undertale: PaperStory • Undertinge • Undertomb • UnderWorld • Unofficial Underfell • When You Become Frisk
World Overhaul	Afterthought • Blind Art • Collapsed Timelines • Deltarune • Dreamtale • Godverse • HaCkErTaLe • REverse Nightmare(s) • Template and Pale • UnderMaze • Undertable • Undertale: Project Sigma • Vampire-Verse
Same Person	Charatale • Christmas Party • Dreamswap • Eternal Starvation • Frogtale • GasterGang • Momma CQ • Sans the Game • Temmietale • The Villain Sans Squad • Waningverse

[1] It's a different world that might even have different rules. That doesn't mean there will be no connections at all though. - Deltarune FAQ

[2] That game… I ended up repurposing a few of the songs from it for Undertale. For example, “Heartache” was originally called “Joker Battle” and “Bonetrousle” was originally the main battle theme. - Toby Fox, Indie World

[1]

[2]