FNF Chara vs BF Knife Fight

Rating:4.0 (134 votes)
Released:December 4, 2025
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

A Rhythmic Clash in the World ofUndertale

Dive into the intenseFNFChara vs BF Knife Fightmod, where rhythm meets one of the darkest moments in Undertale lore. In this challenging crossover, EchoBoyfriendfinds himself face-to-face with Chara at the end of a Genocide Route. With both characters eager to prove their strength, this mod delivers a high-energy musical showdown that tests your skills like never before.

This mod is brought to life through the animation work ofChino’s Animatedand made playable byXTheXanderX. The result is a unique and immersive experience that stays true to both Friday Night Funkin’ and Undertale's intense atmosphere.

Story: When Two Worlds Collide

In a twisted turn of events, Echo BF accidentally teleports into the final scene of an Undertale Genocide run. As Chara moves in for the final strike against the player character, something goes wrong — the game doesn't fully crash because BF is still standing, even though his SOUL has been destroyed. This glitched reality sets the stage for an epic rap battle between two powerful forces: one seeking control, the other craving a new challenge.

Gameplay and Features

  • Challenging rhythm-based combat
  • Unique crossover between FNF and Undertale universes
  • Web-optimized for easy access on any device (PC, Mac, Linux, Chromebook)
  • Slightly different mechanics compared to the original EXE version

Whether you're a long-time fan of FNF or a diehard Undertale enthusiast, this mod offers a fresh and exciting take on both franchises. The web version ensures that more players can enjoy the mod without worrying about system compatibility or storage space.

Development Team and Credits

Mod Creators

  • Chino’s Animated: Animation
  • XTheXanderX: Port and optimization

Game Engine Contributors

NameRole
ShadowMarioMain Programmer
bbpanzuAdditional Programmer
RiverOakenMain Artist/Animator
GitHub CommunityVarious Contributions

Original FNF Team

  • ninja_muffin99: Programming
  • PhantomArcade3kandevilsk8r: Artists
  • kawaisprite: Music
  • FNF GitHub contributors

⚠️ Note: This online version by KBHGAMES.com may differ slightly from the PC build. For the full experience, consider downloading the original EXE file if available.