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Comments (2)

What do you think?

Aishia @Aishia

This looks great! (I've seen youtube footage)
But I hope The Temmie when you save at the end was a joke-

Aishia @Aishia

This looks great! (I've seen youtube footage)
But I hope The Temmie when you save at the end was a joke-

Free

UNDERSWAP Mod (( DEMO ))

Version: 0.0.110 months ago

Underswap is a fan-made alternate universe of Undertale where the characters’ roles are swapped.

Please note that this isn't a separate game. It's a mod for Undertale, meaning you need the base game to play it.

▸▸▸Credits:

Demirramon
▸Most of the script
▸Temmie sprites
▸Asgore sprites
▸Mad Dummy sprites
▸Mettablook sprites

MoonStrik3r
▸Intro soundtrack

Bob Lion
▸Start menu soundtrack

junnbolxi
▸Settings soundtrack (summer and winter)

GoeticThunder
▸Asgore's theme

Grassinio
▸Ruined Home soundtrack

Tazmi
▸Mad Dummy's theme

Tony Wolf
▸"Difficult request" soundtrack
▸Battle soundtrack

Agreis
▸Mothafly overworld sprite

calmwiener
▸Settings soundtrack (fall)
▸Mettablook's theme

Promazter
▸Dance of Dog

clod
▸Sigh of Dog

Feel free to contact me if you're not listed

#undertale #undertaleau #underswap #fangame #adventure #rpg

Development Stage

Early Access

Engine/Language

Game Maker: Studio

Published On

September 7, 2025

Mild Cartoon Violence

Mild Fantasy Violence

UNDERSWAPTHEGAME @UNDERSWAPTHEGAME

Pinned11 months

Subscribe to the YouTube channel to view early gameplay:
https://www.youtube.com/@PLAYUNDERSWAP
Keep in mind that everything in the preview is subject to change.

UNDERSWAPTHEGAME @UNDERSWAPTHEGAME

23 hours

The final section of the Ruined Home is about 90% finished. The aim currently is to release the full demo this summer.

Game Dev

Undertale

RPG

UNDERSWAPTHEGAME @UNDERSWAPTHEGAME

18 days

Quick progress update: the entire Ruined Home section leading up to Asgore's house is now fully complete. Work on Asgore's house is progressing well and is currently around 50% finished, putting the overall area much closer to completion.