FNF vs Monster Samey (Immunus Showdown)

Rating:5.0 (159 votes)
Released:February 10, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

FNFvsMonsterSamey (Immunus Showdown)

Get ready to dive into a haunting and intense showdown inFNF vs Monster Samey (Immunus Showdown), a full week mod forFriday Night Funkin’. In this eerie encounter,BoyfriendandGirlfriendfind themselves in a desolate parking building, facing off against the emotional and monstrous Samey. With four original and challenging songs, this mod tests your rhythm skills in a setting filled with tension and mystery.

This mod brings a complete narrative experience, immersing players in a story that unfolds over a single, fateful night. If you're a fan of horror-inspired FNF content, this one is not to be missed.

Story: A Dark Encounter

Girlfriend, tired of her father’s constant schemes to eliminate Boyfriend, decides to take a peaceful getaway. The two head to a seemingly quiet location —"Voodone St." — and enter an abandoned parking building. It's the perfect spot for some alone time... or so they thought.

As they explore, the sound of sobbing echoes through the empty corridors. They soon discover the source: a creature known asSamey, lurking in the shadows, wrestling with his own inner turmoil.

Wanting to help, Girlfriend suggests using music to calm him. But as we all know in the world of FNF, good intentions can lead to explosive rap battles.

Tracklist: Intense Rhythmic Duels

The mod features a full set of four original songs, each increasing in difficulty and emotional intensity:

  • Sigh Lenced
  • Alerted
  • Meltdown
  • Fatigue

Each track is designed to challenge your timing and reflexes, with unique note patterns and rhythms that reflect the growing tension between the characters.

Gameplay and Features

  • Full Week Mod: Experience a complete story arc with four unique songs.
  • Challenging Charting: Songs are crafted to test even experienced FNF players.
  • Unique Art Style: The mod introduces a dark, horror-tinged visual style that complements the theme.
  • Immersive Atmosphere: The music and setting work together to create a truly unsettling vibe.

Development Team and Credits

A huge team of talented individuals broughtFNF vs Monster Sameyto life. From coding to art and music, the mod showcases a collaborative effort from across the FNF community.

Core Mod Creators

RoleName(s)
DirectorPooterStapot
Chartersgibz679, pointy, Mathesu
Codersshadowfi, Just Jack, BrightFyre, Kayya, ash237, .ROYAL., hexar"
ArtistsTeethlust, XenoToast, OhSoVanilla, ButterInAToast, Wooked, Offbi, NemoInABottle, OneilR, SmorsiPan
MusiciansSaruky__, Addicted2Electronics, Kalpy, GalXE, fueg0
TestersAmazeinG666, MaxOKE, AnInternetsEcho, EllisBros, TRéZZY, ItoSaihara, DusterBuster, ChildishMangaVa

Game Engine Credits

The mod runs on a custom engine built by a team of dedicated developers:

  • ShadowMario– Main Programmer
  • bbpanzu– Additional Programmer
  • RiverOaken– Main Artist/Animator
  • Thanks to all contributors on GitHub

Original FNF Credits

  • ninja_muffin99– Programming
  • PhantomArcade3k and evilsk8r– Artists
  • Kawai Sprite– Music
  • Shoutout to all GitHub contributors who helped shape the base game

Web Port Accessibility

This mod is also available as aweb-optimized version, making it more accessible to players on devices such as Chromebooks, Macs, and Linux systems. It's a great option for those with limited storage or older hardware. However, keep in mind that the web version may have slight differences or missing features compared to the PC build. For the best and most complete experience, downloading the PC version is highly recommended.


If you enjoyedFNF vs Monster Samey, make sure to follow the mod creators for updates and future projects. This mod is a must-play for fans of story-driven, horror-themed rhythm battles.