FNF Sonic Below The Depths

Rating:4.0 (139 votes)
Released:January 13, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

Dive Into a Haunting Rhythm Battle

FNFSonicBelow The Depthsbrings a chilling twist to the Friday Night Funkin’ universe. In this emotionally charged mod, you’ll face off againstSink, a zombified version of Sonic trapped in an underwater mine. But this isn’t just another EXE-styled battle — it’s a chance to offer relief through music.

Sink isn't your typical villain. Bound by chains and consumed by endless suffering, he represents a darker, more tragic side of the Sonic mythos. As you rap your way through intense beats, you're not just battling — you’re trying to ease the pain of a once-speedy hero now lost in despair.

The Story Behind Sink

Chained and submerged deep within the Labyrinth Zone, Sink is no longer the hero we know. A series of misfortunes led to his drowning, but his will to survive kept him tethered to existence — in the most painful form imaginable. He exists in a limbo of agony, with no one around to hear his silent screams.

"He’s essentially like a zombified Sonic, trapped inside a never-ending state of pain, suffering, and loneliness."

This mod explores themes of isolation, loss, and the thin line between good and broken. Will you be the one to finally set him free, or will he remain forever bound?

Sink: The Third Song in an Eerie Trilogy

FNF Sonic Below The Depths is the third installment in a trilogy of EXE-style Sonic mods. It followsChaos NightmareandPhantom Attack, building a somber narrative arc that delves deeper into the psychological horror of the EXE world. Each mod adds layers to the lore, and Sink stands out with its atmospheric visuals and haunting score.

The track itself, composed byJuno, sets a melancholic yet powerful tone. You can listen to the full soundtrack on the composer's official YouTube channel.

Gameplay and Web Optimization

This mod is fully optimized for web play, making it easier than ever to jump in whether you're using a Chromebook, Mac, Linux, or even a low-end PC. The web version ensures broader accessibility so fans worldwide can experience the emotional weight of Sink’s story without needing high-end hardware.

Meet the Team Behind the Mod

A talented group of creators came together to bring this dark vision to life:

Core Mod Creators

  • GARBO: Sprite Artist and Animator
  • Juno: Composer ofSink
  • Ito: Background Artist
  • Gibz: Charter
  • JayyThunder: Animation Help
  • Murasaki: Coder

Game Engine Contributors

  • ShadowMario: Main Programmer
  • bbpanzu: Additional Programmer
  • RiverOaken: Main Artist/Animator
  • Plus contributions from the wider GitHub community

Original FNF Credits

  • ninja_muffin99: Programming
  • PhantomArcade3kandevilsk8r: Artists
  • kawaisprite: Music
  • And all other contributors to the FNF GitHub project

FNF Sonic Below The Depths is more than just a rhythm game — it's a journey into the heart of darkness, where every note might just echo a little louder in the silence below.