FNF Silly Billy vs Yourself

Rating:4.2 (158 votes)
Released:January 13, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

Get Ready to Battle Your Dark Reflection inFNFSilly Billyvs Yourself

Dive into the eerie and rhythmic world ofFriday Night Funkin’: Silly Billy vs Yourself, a fan-made mod that takes the classic FNF formula and flips it on its head—literally. In this spine-chilling encounter,Boyfriendstumbles upon a haunted mirror and must battle a twisted, sinister version of himself in an intense rap battle.

Originally part of theHit Singlemod by Sturm/Churgney Gurgney, this version has been ported to the web for easy access across all devices. Whether you're on a Chromebook, Mac, Linux, or a low-end PC, this online version ensures you can enjoy the funk without any hassle.

What Makes This Mod Special?

This mod stands out with its unique theme and dark visual style. The idea of facing a doppelgänger adds a psychological twist to the usual FNF experience. The track itself, while challenging, is filled with personality and a touch of horror, making it a memorable entry in the FNF modding scene.

The mod keeps the core FNF gameplay intact—match the notes, keep up the rhythm, and out-funk your opponent—but with a fresh narrative layer that enhances immersion. It’s a must-play for fans who love story-driven content and creative twists on the original characters.

Meet the Talented Team Behind the Mod

The creativity and effort behindSilly Billy vs Yourselfcome from a passionate group of modders and artists:

Silly Billy Team

  • Sturm/Churgney Gurgney– Director / Composer
  • SPACENAUTICA– Co-Director / Artist
  • Doorknob– Designer of"Yourself"
  • Divide– Designer of"Yourself"
  • h0nkish– Creator ofSubterfuge, which inspiredBilly Silly
  • Prex & Sumiko– PE & Lua Port

Game Engine Contributors

  • ShadowMario– Main Programmer
  • bbpanzu– Additional Programmer
  • RiverOaken– Main Artist / Animator
  • Contributions from the open-source community on GitHub

Original FNF Creators

  • ninja_muffin99– Programming
  • PhantomArcade3kandevilsk8r– Artists
  • kawaisprite– Music
  • And all the GitHub contributors who helped shape the base game

Play Anywhere with the Web Port

Designed for accessibility, theweb-optimized versionofSilly Billy vs Yourselfallows players to enjoy the mod directly in their browser. No need to download or install anything—just open the page and start playing. It's perfect for those with limited storage, unsupported systems, or anyone looking for a quick session on the go.

⚠️ Note: While the web version captures the core experience, some features or mechanics from the original PC build may differ or be missing. For the full experience, consider downloading the original mod for PC.

Immerse yourself in this haunting beat, test your skills, and see if you can out-rap your own shadow.