FNF Undertale 2: Ruins Update

Rating:4.0 (195 votes)
Released:February 10, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

Dive Into the Underground

FNFUndertale2: Ruins Update brings the magic and mystery of the Underground to Friday Night Funkin’. In this fan-made mod,Boyfriendventures through a reimagined Over World inspired by the hit gameUndertale, facing off against some of its most memorable characters in rhythm-based battles. With new gameplay mechanics and a unique exploration system, this mod offers a fresh take on the classic FNF formula.

Unique Over World Gameplay

Unlike traditional FNF mods, theUndertale 2: Ruins Updateintroduces an interactive overworld where players navigate to find hidden bosses and unlock new songs. It’s not just about hitting the notes — it's about discovering secrets, solving puzzles, and surviving encounters with iconic enemies from theUndertaleuniverse.

This mod is also available to play online, making it more accessible for those who want to jump right in without downloading anything.

Tracklist – Battle theMonsters of the Underground

Each track in this mod is tied to a specific encounter or area in the Over World. You’ll need to explore to unlock these songs in Freeplay mode. Here are the featured songs:

  • howdy
  • tutoriel
  • whimsum
  • froggit
  • dummy
  • mychild
  • ruins1
  • spooky-shuffle
  • heartache
  • soulbreak

Every song adds a new layer to the story, letting you experience the world ofUndertalein a whole new way through music.

How to Play

To make the most of your journey in theFNF Undertale 2: Ruins Update, here are a few tips:

  • Save your progress at Star checkpoints.
  • After saving, press the"Back" button (default: ESC) to return to the Over World menu.
  • Songs will only appear in Freeplay once you've found and beaten them in the Over World.

These mechanics add a sense of adventure and strategy, making every victory feel earned.

Meet the Creators Behind the Mod

The team behindFNF Undertale 2: Ruins Updatehas poured creativity and passion into every aspect of the mod. From coding to art and music production, the contributors have worked tirelessly to bring this project to life.

Main Team

  • BoxOfRocks– Coder, Music Producer

Contributors

  • lightywighty – Artist
  • Egg Overlord – Artist
  • EEF – Artist/Animator
  • Yoshifan33 – Artist/Animator
  • neatochao – Artist/Animator
  • MajoraTobi – Artist

Special Thanks

  • Jakei and NyxTheShieldFNF Xtaleserved as a major inspiration for this mod. Some assets were borrowed from their work.
  • DM Dokuro– A talented musician whose original tracks are featured in the mod. Be sure to check out his YouTube channel!
  • NeatoNG– Creator of the amazing Omega Flowey sprite. You can find him on Twitter: @NeatoNG_

Game Engine Credits

This mod runs on the base FNF engine, which was made possible thanks to the hard work of the original development team:

  • ShadowMario– Main Programmer
  • bbpanzu– Additional Programmer
  • RiverOaken– Main Artist/Animator
  • And all the community members who contributed via GitHub

Original FNF Credits

We also acknowledge the original developers ofFriday Night Funkin':

  • ninja_muffin99– Programming
  • PhantomArcade3kandevilsk8r– Artists
  • kawaisprite– Composer
  • And the entire FNF community for their continued support and contributions to the open-source project

Web Port Accessibility

For players with limited hardware or those using devices like Chromebooks, Macs, or Linux systems, a web-optimized version of the mod is available. This version allows fans to enjoy the mod even if they can't run the full PC version, though some features or mechanics may differ slightly from the original build. For the complete experience, we recommend playing the desktop version if your system supports it.