FNF Nocturnal Protocol Mod: Play the Myths of Tubbyland Slendytubbies Recreation

FNF Nocturnal Protocol is a fan-made rhythm game mod for Friday Night Funkin’ that recreates the Nocturnal Protocol song from the Myths of Tubbyland mod, pulling its dark visual style from the Slendytubbies horror series. Players square off against the Guardian in a single-track showdown built around tight note timing and a heavy, atmospheric soundtrack.

Where the Mod Comes From

The recreation was put together by modder GammamonNiro. It’s based on the Nocturnal Protocol song originally composed by Sanco the Fox for FNF: Myths of Tubbyland — a larger mod that crosses Friday Night Funkin’ with the lore of Slendytubbies, a fan horror franchise spun out of the Teletubbies universe.

If you’ve ever seen the original Slendytubbies “A Walk in the Park” trailer, the whistling section in this track is a direct callback. That nostalgia hook is a big part of why the song landed with fans in the first place.

What Players Are Up Against

The opponent here is the Guardian, a white teletubby figure carrying a flashlight, drawn straight from the Slendytubbies storyline. His role in that universe is to monitor the teletubbies for a shadowy organization — until things go sideways and Tinky Winky goes corrupted. In the mod, he’s a heavyweight rhythm rival whose stance and animations carry an unsettling, almost ceremonial weight.

The track itself runs darker than most FNF songs. Slow build, heavy bass, and that whistling reference woven through the middle. The fan recreation was built using Psych Engine 1.0.4, which is the recommended way to play it.

How the Gameplay Works

If you’ve played any Friday Night Funkin’ mod before, the loop here will feel familiar. Arrows scroll up the screen and you hit them in time with the music. Miss too many in a row and you lose. The challenge is reading the chart cleanly while the visuals try to throw you off.

What sets Nocturnal Protocol apart from the dozens of other FNF mods floating around isn’t a wild new mechanic — it’s the mood. The Slendytubbies aesthetic gives the whole thing a horror-game weight that most rhythm games don’t bother with.

Multiple Endings to Chase

The mod includes more than one ending depending on how the match plays out. That’s one reason it’s worth replaying. Beat the song clean and you’ll see a different conclusion than if you barely scrape through.

Who It’s For

Players who already follow the Friday Night Funkin’ modding scene will get the most out of this one — the references to both Myths of Tubbyland and the original Slendytubbies games hit harder if you know the source material. That said, you don’t need any of that background to enjoy the rhythm gameplay. The song is strong on its own.

Game Controls

• Arrow Keys — hit notes in time with the music
• WASD — alternative input for notes
• Enter — confirm menu selections
• Esc — pause or exit
• Space — interact with menu prompts

As always, remember to have fun!