FNF Symphony of Sin – (Cult of the Lamb)
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FNF Symphony of Sin – (Cult of the Lamb)

Symphony of Sin is a FNF mod based on the Cult of the Lamb indie game.

This is a certified cult classic.


As you rap your way through 2 epic songs that feature The Lamb and The One Who Waits.

Do you have what it takes to rap a God? Or, will you be their next sacrifice?

This mod is loyal to the actual game, the references, music, and the accurate art style. Cool.


  • Mutton
  • Usurper

Symphony of Sin Team:

  • Mod Director(s)
  • Artists/Animator(s)
    • Inferno SilentDragon
    • d0gechan
    • Rena_Vee
  • Coder(s)
    • BoxOfRocksBro
    • WerdSMH
    • WinnWhatif
  • Musician
    • IZincI
    • VA(s)
    • DemonThingy
    • Appletime
    • grimmoire0322
    • ivis_birb
  • Charter(s)
    • Boozled Gaming
    • Dingledorf
    • Background Character
    • SliverFist14
  • https://gamebanana.com/mods/download/526550

Game Engine Credits:

  • Shadow Mario: Main Programmer
  • bbpanzu: Additional Programmer
  • RiverOaken: Main Artist/Animator
  • Also everyone that contributed on GitHub.

Original FNF Credits:

  • ninja_muffin99 – Programming
  • PhantomArcade3k and evilsk8r – ARTISTS
  • kawaisprite – TASTY MUSIC
  • AND everyone that contributed to the GitHub source.

The goal of this web optimized port is to make FNF and this mod more accessible to players that can’t otherwise play it on their potato PC, on a Chromebook,  on their Mac, on their Linux, or simply can’t run the EXE files on their computer. Also help save hard drive space. Please keep in mind that this online web port by KBHGAMES.com might be slightly different and/or have missing mechanics than the PC version. So make sure to also get the PC version if you have a PC.

If you want a challenge, turn off Ghost Tapping in the settings.

Recommend using Google Chrome to play FNF Mod for the best performance.

Jam to the beats of the rhythm and just have fun!