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Comments (18)

What do you think?

Neo-Metal-Sonic @Neo-Metal-Sonic

ABSOLUTE CINEMA, WHAT UNDERTALE HARDMODE SHOULD HAVE BEEN, happy 10th anniversary, PAPYRUS's PUZZLE YAHHHH

zymen33 @zymen33

I was honestly expecting the 'shortcut' to just be Sans walking us through the gate anyway. That could've been funny.

LucasMartinez_27de @LucasMartinez_27de

why when i go fullscreen the graphics starts glitching?

ZacharyWalters1 @ZacharyWalters1

why can I not download this? I put the data.win in undertale, but nothing changed

Kipper @Kipper667788

I LOVE THIS MOD!!!! it really feels like a continuation of hard mode

thank you I look forward to this mod you are doing a good job

Free

Undertale Hardmode (Latest)

Version: 0.0.55 days ago

Free

Old version (0.0.4)

Version: 0.0.45 days ago

Use it if the new version freaks out.

Anniversary special... Post-ruins Undertale Hardmode.

CURRENT PROGRESS: pacifist only, ends right before the gauntlet of deadly terror.

I stick with canon-like changes, thus making this mode more realistic to the real 'hard mode' that never existed after ruins.

Quick reference: Undertale has a hard mode. To play it, name fallen human "Frisk". The original Hard mode ends after Toriel Battle.

Installation:

download the data.win and replace it with your game's data.win.

If you use linux, the file is called game.unx.

Demo - Snowdin Forest on Pacifist - released!

#hardmode #undertale #mod

Development Stage

Early Access

Engine/Language

Game Maker: Studio

Published On

September 14, 2025

Cartoon Violence

Fantasy Violence

Alcohol Reference

Tobacco Reference

Mild Language

Comical Shenanigans

Simulated Gambling

Hupik @Hupik

2 months

Thank you all for the 30 subscribers! Yall made unimaginable numbers. All features from the previous post are here (testing). if I ever find any bug in it, I'll roll back to 0.0.3. Good time to go on.
As you can see, i tried upscaling cap. Your thoughts?

Hupik @Hupik

2 months

I have 9 points long list of "updated" fixes. More coming later and it will be released in a heap in which will be no plot expansion, just technical work and polishment.

Hupik @Hupik

2 months

Enjoy testing demo release!

Hupik @Hupik

2 months

Things are kinda rough, so ill leave tundra zone as is. I did not finished greater dog and danger bridge and will likely not finish it in time, so you'll have beta without these 2 things.