FNF Symphony of Sin – (Cult of the Lamb)

Praise the Lamb in This RhythmicFNFCrossover

Step into the dark and rhythmic world ofFNF Symphony of Sin, a fan-made mod that brings the intense energy ofCult of the Lambinto Friday Night Funkin'. As one of the most popular browser-friendly FNF mods, Symphony of Sin delivers two challenging tracks where you’ll go head-to-head with iconic characters from the indie hit —The LambandThe One Who Waits.

This mod doesn’t just borrow aesthetics; it’s a full-on tribute, complete with authentic art, music, and references that capture the eerie charm ofCult of the Lamb. Whether you're a die-hard cultist or just looking for a fresh FNF challenge, this mod is a certified banger.

Epic Showdown: Song List

Face off against divine and corrupt forces in these two adrenaline-pumping tracks:

• Mutton– A rhythmic battle against The Lamb himself, where faith meets fury on the dance floor.
• Usurper– Confront the ominous One Who Waits in a high-stakes rap-off that tests both skill and soul.

Each track is crafted to stay true to theCult of the Lambvibe, blending its haunting melodies with classic FNF beat battles. Can you out-rap a god, or will you become their next offering?

Faithful to the Source Material

Symphony of Sin isn't just another mod — it's a love letter toCult of the Lamb. From the character designs to the musical tone, everything is carefully curated to reflect the game's unique style. The mod keeps the dark, whimsical tone intact, making it a must-play for fans of both titles.

Meet the Talented Mod Team

Behind every great mod is a team of passionate creators. Here's a shoutout to the amazing people who brought Symphony of Sin to life:

Core Creators

• Nathan S– Mod Director, Logo & Concept Artist
• Glitch DV– Manager, Artist

Artists & Animators

• Inferno Silent
• Dragond0ge
• chan
• Rena_Vee

Coders

• BoxOfRocks
• BroWerd
• SMHWinn
• Whatif

Musicians

• IZinc
• IVA(s)
• DemonThingy
• Appletime
• grimmoire0322
• ivis_birb

Charters

• Boozled Gaming
• Dingledorf
• Background Character
• SliverFist14

Game Engine & FNF Credits

This mod runs on a custom engine built by some of the most talented names in the FNF modding community:

• ShadowMario– Main Programmer
• bbpanzu– Additional Programmer
• RiverOaken– Main Artist/Animator
• And all the amazing contributors on GitHub

We also tip our hats to the original FNF crew:

• ninja_muffin99– Programming
• PhantomArcade3kandevilsk8r– Artists
• kawaisprite– Music
• And the entire FNF GitHub community

Play Anywhere with Web Optimization

Designed for accessibility, thisweb-optimized version of FNF Symphony of Sinensures that even players with low-end devices or non-Windows systems (like Chromebooks, Macs, and Linux machines) can enjoy the mod. No need to worry about large downloads or EXE files — just jump in and start jamming!

⚠️ Note: While the web version is super convenient, it may differ slightly from the PC build. For the full experience, consider downloading the original mod for PC if possible.