FNF SML Movie: The Secret Door!

Rating:4.4 (131 votes)
Released:January 13, 2026
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

Get Ready for a Wacky Rhythm Showdown!

Step into the wild world ofFNFSML Movie: The Secret Door, a fun and quirkyFriday Night Funkin’mod that brings together some of your favorite SML (SuperMarioLogan) characters in a high-stakes musical battle! In this mod,Boyfriendstumbles upon his belovedGirlfriend— who's been turned into a plushie — hidden behind a mysterious secret door. But before he can celebrate, the sinisterBad Things Guyshows up, ready to drop some beats and cause some trouble.

What’s the Story?

In the SML episode"The Secret Door," Bad Things Guy was revealed to be a major antagonist, trying to mess with Mario, Rosalina, and Jeffy. This mod takes that chaotic energy and turns it into a rhythm game face-off. With the help of Brooklyn T. Guy, Boyfriend must win this battle to save his plushified Girlfriend. Will they escape unscathed, or will Bad Things Guy ruin everything with his groovy schemes?

Gameplay & Song Info

This mod features one challenging track:"Bad Things". You’ll need to keep your rhythm sharp as you go head-to-head with the devious Bad Things Guy. The song is filled with intense note patterns and a catchy beat that captures the chaotic spirit of the SML series. It's short, sweet, and totally worth replaying to master.

A few things to note:

  • Girlfriend is a plushiein this mod, which adds a unique twist to the usual FNF dynamic.
  • The mod isbrowser-optimized, so it runs smoothly even on lower-end devices like Chromebooks, Macs, and Linux systems. No need to worry about downloading or running .exe files.

Meet the Team Behind the Mod

This mod was brought to life by a talented group of creators. Here's a quick look at the key contributors:

Mod Creators

  • manman09– The main guy behind the mod
  • Iswearimnotafurry– Helped with backgrounds and animations
  • GhostcatPNG– Handled the music, coding, and game setup
  • shdwprnc– Created the song scene visuals

Game Engine Credits

  • Shadow Mario– Main programmer
  • bbpanzu– Additional programming
  • RiverOaken– Main artist/animator
  • Thanks to all the community members who contributed via GitHub

Original FNF Credits

  • ninja_muffin99– Programming
  • PhantomArcade3kandevilsk8r– Artists
  • kawaisprite– Music
  • Shoutout to all the GitHub contributors who helped shape the base game

Play Online Anytime

This web-optimized version ofFNF SML Movie: The Secret Doormakes the mod more accessible to a wider range of players. Whether you're using a school Chromebook, a Mac, or a Linux system, you can jump into the action without any hassle. Just keep in mind that due to platform limitations, some features or mechanics may differ slightly from the original PC build. For the full experience, we always recommend checking out the desktop version too!