SWAPPED MYTH (TM!UNDERSWAP) [Undertale Fangame]

Swapped Myth (stylized as SWAPPED MYTH) is an Underswap take that aims to focus on expanding the world of Undertale/Deltarune, with ideas both new and old, to enrich its world.

It is our interpretation/view of the premise of UNDERSWAP an alternate universe of Undertale in which character roles, personalities, or even locationsre swapped, in addition, we are adding original content, introducing new characters, while balancing the tone and creating our own unique identity

A DEMO is currently in development and will feature the first area, the Lucent Caverns!

CHECK US OUT

DISCORD | SOUNDCLOUD | BANDCAMP | TWITTER | BLUESKY | WEBSITE

Please read the FAQ before commenting!

There's a tale, dating back to millenniums ago, a story viewed as little more than a myth in the modern age.. an age-old tale of man, and monster, in times long past, these two very races Monsters and Humans ruled valiantly over the tranquil Earth, however, one day, without warning, a great conflict broke out between these two races... a war, really.

Many Monsters were slain, while the humans didn't lose as much as a single life.. The Humans were far too determined, and overwhelmed Monster-kind with their very power. Queen Toriel surrendered, now without their 7 sorcerers, the humans sought the help of their own greatest sorcerers, to seal Monster-kind underground..

For all eternity.

As of the present year, 202X, Mt. Ebbot still stands tall, this very legend carrying on throughout generations.. No one dares to go near the mountain, as anyone who has entered... is said to never return.

• Your choices speak volumes in this world.. will you slay everyone? Or spare them, perhaps even befriend them?

• Multiple endings

• Areas both new, and inspired from old, designed to create a unique experience.

• Experience battles in a new way, with additional mechanics, and unique bullet patterns

• A full, and customizable hard mode (yes, you can count on it)

• Full controller support

• Achievements! for your hunting pleasure. (and full GameJolt API integration)

• Multi-resolution support!

• You can date two skeletons.

• You know what? You can date a lizard too. Happy?

The team behind Swapped Myth consists of numerous people, please take a look at the full list below, and consider supporting their work as well! some team members are credited for more than one thing so you might see them listed in a few different parts of this list!

Directed by

• @Neon-Gr33n (Project Lead, Creative Director)

(may assign other directors for different depts. in the future)

Artwork by

• Doctor Ducksy

• Maxine

• @JustYourAverageGameDev

• s_lfur ica

• AARONMEGAGAMER09

• Duplighost

• Error404

Music by

• @SobaNoodles12

• @JustYourAverageGameDev

• AngryMusicTheoryNerd

• razz

• @Kaedenn

• @sushibite

• Mirage

Written by

• @Alternimo

• @JustYourAverageGameDev

• @Neon-Gr33n

• @aaratnuu-jp (Japanese translation)

Programmed by

• @buggedbeatle998

• @Neon-Gr33n

• @JustYourAverageGameDev

• !Shock

Former members

• EfficientDoom | Writing assistance

• @MaxVilocity | Past music work

• Hadju | Past programming contributions

• Zano | Past artwork

• @Valor52 | Past artwork, Asgore's Redesign, Writing contributions

• _ilovecookies | Past artwork

Contributors

• @Paledoptera | Various musical compositions

• @souptaels | Programming assistance, overworld sprites

• Mo Langning | Programming assistance

• FrostyCat | Programming assistance

• @__b | Past artwork

• @apricoskaart | Various overworld sprites

FREQUENTLY ASKED QUESTIONS (FAQ)

Q: Where can I download this?

A: Unfortunately, you can't download SWAPPED MYTH yet, however, don't fret! A demo is in progress and we are working our hardest to make this playable for y'all. While we do not have a solid release date for the time being, we will keep you all updated.

Q: What platforms will it be playable on?

A: We intend to release this project on Windows, MacOS, Linux, Android, and if your smart toaster runs on android and has a touch screen, you can play it there too!

Q: What is this project about, anyways?
A: This focuses on swapping character roles, but personalities stay pretty much the same. so yes, it's a bit like TS!Underswap in a way, but you've got loads of different things happening and original characters in between; one character I'm VERY excited about in the demo but i can't reveal to you who they are, because spoilers.... but i digress. it sort of justifies the aspect of Underswap as not just rewriting the game with different sprites, but replacing existing character positions with their opposite counterparts and keeping their personalities (mostly). then there's also the mechanics, such as magic! It's an Underswap take intended to be truly unique and stand out.

Q: Is there going to be controller support?
A: Controllers are supported on PC, and will be supported on Mobile as well.

Q: How will future releases be handled once the demo is done?

A: As mentioned before, this is being handled through major content updates but we understand this can be somewhat vague, so read the below for more detailed information!

DEMO 1.0 - Area 1 - (Lucent Caverns and Radiant Garden)

DEMO 2.0 - Area 2 - (The Forest, Sollis Vallis)

DEMO 3.0 - Area 3 - (Ceres Gorge)

DEMO 4.0 - Area 4 - (Crystalline Caverns, Boreal Plateau)

FULL GAME (v5.0.0) - Area 5 and Endgame (Boreal Slums, The Capital, the CRUX, and CASTLE)

Q: Can I join Team Mythical?

A: Yes! you can apply here!

(Form not working, or prefer a different method of contact? read below a full list of ways to contact us!)

Contacts:

Soundtrack: https://soundcloud.com/swappedmyth

neongr33n (contact me directly here if you prefer)

Swapped Myth is inspired by a variety of different media, both inside and outside of the Undertale/Deltarune sphere, this is also reflected in our OST. some inspirations have descriptions included, noting what in particular we drew inspiration from others may lack this.

Inspirations include (but are not limited to):

Mother 3 by Hal Laboratory

Mother 3 is hands down one of my favorite games of all-time, out of several that happen to be on this list, this is my favorite overall, there were certain design choices for the User Interface in Mother 3 which we took inspiration from, such as the iconic Game Over screen, among other things.

Sonic Adventure by Sega

Golden Sun by Camelot Software Planning

While incredibly underrated today, Golden Sun was a really unique RPG release on the GameBoy Advance that pushed the hardware to its limits, especially musically- in particular we draw inspiration from certain aspects of Golden Sun's battle system, like the "Defend" mechanic.

Touhou Project by ZUN & Co.

Touhou Project has served as a form of inspiration musically

TS!UNDERSWAP by @teamswitched

An intruiging Underswap take that's been in development for nearly 7 years now, in particular, we draw inspiration from the inclusion of Deltarune inspired Quality-of-Life mechanics being implemented, an (optional) rounded box, and of course, high effort artwork.

TSR!OUTERSWAP: Orbit of Destiny by @bielFreddy

First notable Outerswap take I saw around the web, created by @bielFreddy this project sported gorgeous, detailed artwork, and some unique twists on the "C" Menu, and Combat, including a magic mechanic, which partially inspired us to include magic as a concept in the world of Swapped Myth, another inspiration drawn from it being the radial battle interface.

Undertale: Yellow by @TeamUTY

Omori by Omocat LLC

We drew inspiration from Omori's iconic "Emotion" mechanic, and reworked it to better fit within the world of Swapped Myth.

Undertale/Deltarune by Toby Fox, Temmie Chang & Co.

Without these wonderful games, experiences, really, we wouldn't have been able to make this happen, so thank you, Toby Fox for creating these games.

Nightmare on Elm Street

Papyrus w/sans: Shadowfell Saga by @Paledoptera

Inverted Fate by Dorked

Castlevania 2: Simon's Quest by Konami

MegaMan by Capcom

MegaMan: Zero 2 by Capcom

Disclaimers & Legal Info:

• This game is recommended for those who have previously played either Undertale or Deltarune (or both! we're not judging) as the difficulty is a bit higher.

• UNDERTALE is the intellectual/legal property of Toby Fox, Temmie Chang & Co. Please support the original release.

• While you can play in both 30 and 60FPS, we recommend sticking to the default setting of 60FPS for the smoothest possible experience!

Check out our social media here!

Looking for the OST? Check out our SoundCloud page!

Interested in the project? want more updates? or maybe you just want to show off your own stuff, either way, feel free to join the Swapped Myth Discord Server <<

COPYRIGHT NOTICES:

UNDERTALE © 2015 / DELTARUNE © 2018 by Toby Fox, Temmie Chang & Co.

SWAPPED MYTH (C) 2025- 2026 by Team Mythical

Underswap by popcornpr1nce and the Undertale AU Comminity

TAGS:

#underswap #undertale #fangame #action #adventure #rpg #puzzle #deltarune #UNDERTALE #DELTARUNE #bullethell