FNF vs. Ourple Guy: Circadian Rhythm

Rating:4.4 (158 votes)
Released:February 10, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

FNFvs. Ourple Guy: Circadian Rhythm – A SpookyFNAF-Inspired Mod

Get ready to groove to some eerie beats withFNF vs. Ourple Guy: Circadian Rhythm, a fan-madeFriday Night Funkin’mod that brings a chilling new character and track into the mix. Based on the unsettling Ourple Guy from theFive Nights at Freddy’suniverse, this mod delivers a unique visual style and haunting rhythm that fans of both FNF and FNAF won’t want to miss.

This browser-optimized mod is available to play online for free, making it accessible to players on a variety of devices — whether you're using a Chromebook, Mac, Linux, or just don't want to download the full game. It's a great way to enjoy custom FNF content without taking up too much hard drive space.

Gameplay and Music

The highlight ofFNF vs. Ourple Guy: Circadian Rhythmis its titular track — a synth-heavy, atmospheric piece that perfectly complements the mod's dark and mysterious vibe. The song is not only available in-game but can also be streamed on popular platforms like SoundCloud and YouTube.

While playing, you'll face off against the enigmatic Ourple Guy, whose design draws directly from the FNAF lore, giving the mod a unique identity within the FNF community. The note patterns and visuals are crafted to match the tone of the music, ensuring a challenging yet immersive experience.

Mod Development Team

This mod was brought to life by a talented group of creators who are passionate about both FNF and FNAF. Here are the key contributors:

Main Creators

  • J8-Bit– Director, Lead Artist, and Lead Musician
  • skiwiquest– Director of the originalvs. Ourple Guy
  • Ourple Guy Devteam– Developers of the original mod

Additional Contributors

  • Sir_Koi– Thumbnail Artist
  • ThisIsBennyK– Playtester

A big thank you was also given to the community for their support — because without the players, mods like this wouldn't be possible!

Game Engine and Original FNF Credits

The mod runs on a version of the FNF engine developed by a team of dedicated coders and artists. Here are the people behind the base game and engine code:

Engine Credits

  • ShadowMario– Main Programmer
  • Yoshubs– Assistant Programmer
  • RiverOaken– Main Artist / Animator
  • bbpanzu– Ex-Programmer
  • Special thanks to all the contributors on GitHub

Original FNF Team

  • ninja_muffin99– Programming
  • PhantomArcade3kandevilsk8r– Artists
  • kawaisprite– Composer
  • And everyone else who helped build the open-source foundation of FNF

Play Online Anytime

Designed with accessibility in mind,FNF vs. Ourple Guy: Circadian Rhythmis fully playable in your browser. This web version ensures that even if your PC isn't powerful enough to run the .exe file, or if you're on a restricted device, you can still enjoy the mod. Just keep in mind that some features or mechanics may differ slightly from the PC version.

So if you're a fan of horror-inspired characters and catchy beats, give this mod a try and see how long you can survive the rhythm!