Peter, What Are You Doing? But It’s a FNF Mod

Rating:4.7 (86 votes)
Released:November 15, 2025
Technology:HTML5 (Unity WebGL)
Platforms:Browser (desktop, mobile, tablet)

A Wild Rap Battle in the World ofFNF

Get ready for aFamily Guy-inspired twist inFriday Night Funkin’!Peter, What Are You Doing?is a fan-made mod that turns a classic animated moment into an intense musical showdown. In this mod, Brian the dog tries to stop Peter Griffin from indulging in some... less-than-legal substances — all through the power of music.

The Story Behind the Scene

This mod is based on a memorable scene fromFamily Guy Season 5, Episode 10:"Peter’s Two Dads", where Brian walks in on Peter mid-act and reacts with shock. The mod recreates the tension and humor of the moment, turning it into a full-fledged rap battle that challenges players to keep up with the beat.

⚠️ Reminder: Drug use is dangerous and harmful. This mod is purely for entertainment and doesn't promote or condone substance abuse.

Gameplay & Features

  • Unique Theme: Based on a cult-classic TV moment, giving it a nostalgic and humorous edge.
  • Rhythm Challenge: Test your skills against Peter in a high-energy rap battle.
  • Browser Compatibility: Optimized to run smoothly on low-end devices, Chromebooks, Macs, and Linux systems — no heavy downloads or EXE files required.

Meet the Team Behind the Mod

ThePeter, What Are You Doing?mod is brought to life by a talented group of contributors from the FNF modding community:

Main Creators

  • Prettycoolbanana– Artist, Coder, Charter, and more
  • @GramApple– Art and inspiration
  • @RandomIncIsDead– Art
  • @aytanner_– Chord progression score
  • @ayybeff– Drum loop
  • @aidenluvscats– Original tweet inspiration

Built WithPsych Engine

This mod runs on thePsych Engine, a popular and performance-enhanced version of the FNF framework:

  • ShadowMario– Main programmer
  • bbpanzu– Additional programmer
  • River Oaken– Main artist/animator
  • Plus contributions from the Psych Engine GitHub community

Original FNF Credits

We also tip our hats to the originalFriday Night Funkin’team:

  • ninja_muffin99– Programming
  • PhantomArcade3kandevilsk8r– Artists
  • kawaisprite– Music
  • And all open-source contributors on GitHub

Final Thoughts

If you're aFamily Guyfan or just looking for a fun, browser-friendly FNF experience,Peter, What Are You Doing?delivers both laughs and rhythm. So plug in your headphones, hit the notes, and help Brian talk some sense into Peter — one beat at a time.