FNF Hypothermia (Frostbite Undertale Mix)

A ChillingFNFShowdown withSans

Get ready to face off against one ofUndertale's most iconic characters inFNF Hypothermia, a electrifying Friday Night Funkin’ mod that blends the haunting melodies ofFrostbitefromHypnos Lullaby v2with the classic FNF rhythm gameplay. This mod doesn't just bring a new track to life — it introduces chilling new mechanics to test your skills.

Unique Gameplay Mechanics

FNF Hypothermia cranks up the challenge with two key mechanics that set it apart from standard FNF mods:

• Cold Bar Management: You'll need to keep an eye on a rising cold meter. Press theSpacebarto reduce it, but use this ability wisely — you're limited to just11 pressesper playthrough.
• Bone Note Avoidance: When Sans makes his appearance, certain notes turn into dangerous bone attacks. Time your moves carefully to avoid taking damage.

These features add a layer of strategy and tension, making each playthrough a true test of skill and timing.

About the Song

This mod is built around a powerful Undertale-style remix ofFrostbite, originally created byWiizp_. The track captures the wintry, melancholic tone of the original while giving it a fresh, high-energy spin perfect for a rhythm game showdown. The mix includes both instrumental and vocal versions, letting players choose their preferred style for the fight.

Mod Creators and Contributors

FNF Hypothermia is the result of a passionate collaboration between several talented modders and artists. Here's a look at the key contributors:

Main Mod Team

• matigol2009– Main mod creator
• wiizp_– Composer of theFrostbiteUndertale Mix

OriginalVs THE GREAT PAPYRUSTeam

• BunxMaker– Artist and Programmer
• Aiess– Charter
• Legogodzilla– Composer
• J-Bug– Papyrus animation creator
• Yamahearted– Music contributor
• Toby Fox– Creator ofUndertale

Special Thanks

• Drawoon_– For theFrostbitePsych Engineport
• Hypnos lullaby v2– For providing base assets
• TheLunar27– Creator of the FriskBoyfriendskin

Game Engine Credits

The mod runs on the widely used FNF engine, with development support from a team of dedicated coders and artists:

• ShadowMario– Main Programmer
• Yoshubs– Assistant Programmer
• RiverOaken– Main Artist/Animator
• bbpanzu– Ex-Programmer
• And many more community contributors via GitHub

Original FNF Credits

Friday Night Funkin’ was originally developed by a group of Newgrounds users:

• ninja_muffin99– Lead Programmer
• PhantomArcade3kandevilsk8r– Artists
• kawaisprite– Music Producer
• With contributions from the open-source GitHub community

Play Anywhere with Web Optimization

This web-optimized version of FNF Hypothermia is designed to be more accessible, especially for players using devices that can't run traditional .exe files — such as Chromebooks, Macs, or Linux systems. It's also a great option for those with lower-end hardware or limited storage space. However, some features or mechanics may differ slightly from the full PC version, so downloading the original mod is recommended for the complete experience.