Undertale: Embrace & Endure by Epilef1001

Undertale Full Of Love by Harluf and team

DELTARUNE CHAPTER REWRITTEN: JUNKIL´S DEAL by isak_random

undertale key to patience by Keytopatience

TR! Chapter Rewritten by tsunderswapfanthebird and team

Wrath of the Worldsmith by Minwa

LOVE BUSTER!! by LeifLemmon [completed]

Undertale: Sprout by UNDERTALE: SPROUT TEAM

UNDERTALE: RETRIBUTION by Dark_Haos and team

undertale micheal by MichealUndertale

Undertale Blue by Pokeskydelux612

= Statistics on project statuses =

(( 25 projects have been removed from the list ))

~ active projects: 486 (-30), including

active less than a year ago - 343

active less than three years ago - 142

active more than three years ago - 1

~ completed projects: 9 (-1)

reclassified - Undertale: Merge Universe by Losas Guy (Developer)

(( the mistake was discovered by @Lowtier_Trash ))

~ cancelled projects: 58 (+17)

(( some of them have not been active for more than three years ))

new - SOLUNE by TeamSOLUNE

~ projects with undefined status: 114 (+90)

~ favorites: 35 (-2)

(( three of them with undefined status ))

>>> The next inventory is expected in August 2026

= Statistics on genres and alternative universes =

Total active Undertale projects: 429 (-26), including

~ Underswap AUs: 28 (-3)

~ Underfell AUs: 14 (-3)

~ Storyshift AUs: 11 (-1)

~ Dusttale AUs: 29 (-1)

~ Prequels: 186 (-10)

~ Sequels: 31

~ Crossovers: 12 (-1)

~ Other UT AUs: 102 (-8)

~ UT mods: 16 (+1)

Total active Deltarune projects: 57 (-4), including

~ New chapters: 18 (-1)

~ Other DR AUs: 36 (-3)

~ DR mods: 3

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When making the list, I rely on personal perception. If you think that any project has been overlooked, or you want to clarify if there is a particular game on the list, you can always ask me about it.

The assessment of the latest activity is largely determined by a relatively reliable date. Cancelled projects are those that have not been active for more than three years. Some projects whose activity was observed conditionally more than a year ago have an undefined status.

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~ You can see all my activity here