What Is FNF Nocturnal Protocol?
FNF Nocturnal Protocol is a fan-made Friday Night Funkinā mod built around a single, atmospheric track: Nocturnal Protocol, originally composed by Sanco the Fox for the larger Myths of Tubbyland project. Modder GammamonNiro recreated the song and its stage as a standalone experience, keeping the heavy bass, slow build, and the haunting whistle that fans instantly recognise as a reference to the original Slendytubbies āA Walk in the Parkā trailer.
Where most FNF mods lean into bright colours and fast-paced comedy, Nocturnal Protocol goes the opposite direction. The stage is dark, the opponent moves like heās performing a ceremony, and the whole thing plays more like a horror game than a rhythm game. That contrast is exactly why it stands out in a scene that produces hundreds of mods every year.
The Guardian
Your opponent is the Guardian, one of the most recognisable figures from Slendytubbies lore. In that universe, Tinky Winky is corrupted and the Guardian, a pale Teletubby carrying a flashlight, is left to watch over the others on behalf of a sinister organisation. In the mod heās a slow, weighty rhythm opponent whose posture and animations feel more like a ritual than a rap battle.
The flashlight isnāt just decoration. Lighting shifts and the dim palette make the chart harder to read than the note density alone would suggest, so the difficulty here comes from the mood rather than from a gimmick mechanic.
How To Play
If youāve played any Friday Night Funkinā mod before, the loop is identical:
- Notes scroll up the screen toward the receptor arrows at the top of your strum line.
- Press the matching arrow key (or W / A / S / D) exactly as the note passes the receptor.
- Hold long notes for their full length to keep your health climbing.
- Miss too many notes in a row and your health bar hits zero, ending the run.
The song builds slowly, so the opening minute is a good chance to learn the stageās visual language before the bass drops and the chart gets dense.
Multiple Endings
Nocturnal Protocol has more than one ending, decided by how the match plays out. A confident, near-perfect run unlocks a different conclusion from a run where you barely survive. Keep an eye out for the custards scattered across the level too ā collecting them influences which ending you see. That replay hook is a big part of why the mod has stuck around.
Tips For Surviving The Night
- Learn the whistle. The whistled motif repeats throughout the track and lines up with rhythm changes. Once youāve internalised it, the chart is far easier to anticipate.
- Donāt stare at the Guardian. His animations are deliberately distracting. Keep your eyes locked on the receptor arrows.
- Play on a lower difficulty first. Learn the layout on Easy or Normal, then attempt Hard for the best ending.
- Use fullscreen. The dark stage is much easier to read when the game fills your screen ā use the fullscreen button above the game.
Where It Comes From
The Myths of Tubbyland mod merges Friday Night Funkinā with the Slendytubbies horror series, a long-running fan project that reimagines the Teletubbies as a survival-horror setting. Nocturnal Protocol became one of the most requested songs from that project, and GammamonNiroās recreation, developed on Psych Engine 1.0.4, made it playable on its own. The browser build hosted here lets you play it instantly without installing anything.