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FNF: Underground Funk – Backbone

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About FNF: Underground Funk – Backbone

FNF: Underground Funk – Backbone is a unique mod for Friday Night Funkin' that transports players into the world of Undertale for a one-of-a-kind rap battle experience.

What is FNF: Underground Funk – Backbone?

FNF: Underground Funk – Backbone is a unique mod for Friday Night Funkin' that transports players into the world of Undertale for a one-of-a-kind rap battle experience. Developed as a special one-off mod, this exciting crossover invites players to join Boyfriend as he takes on Sans and Papyrus in an epic showdown set to the tune of the new song "Backbone." With its blend of classic FNF gameplay mechanics and Undertale-inspired aesthetics, this mod offers a fresh and exciting twist on the rhythm game genre.


In FNF: Underground Funk – Backbone, players must guide Boyfriend through a series of rap battles against Sans and Papyrus, two iconic characters from the beloved indie game Undertale. Using the arrow keys, players must hit the right notes at the right time to match the rhythm of the music and outperform their opponents. With each successful beat, players will earn points and progress through the rap battle, ultimately aiming to emerge victorious against the formidable skeleton duo.


  • Bone-Chilling Rap Battles: Groove to the beat of bone-chilling rap battles as Boyfriend faces off against Sans and Papyrus in a series of intense musical showdowns. With each rap battle becoming more challenging than the last, players will need to stay focused and keep their wits about them to come out on top against the formidable skeleton duo.

  • New Song "Backbone": Immerse yourself in the world of Undertale with the new song "Backbone," composed specifically for FNF: Underground Funk – Backbone. Featuring catchy melodies, infectious beats, and clever lyrics, this song sets the stage for an unforgettable musical experience that will keep players tapping their toes and singing along from start to finish.

  • Undertale-Inspired Aesthetics: Explore the underground world of Undertale with visuals and aesthetics inspired by the beloved indie game. From familiar locations to iconic characters, every aspect of the mod is designed to evoke the charm and nostalgia of Undertale, creating an immersive gaming experience that fans of the series will love.

  • Special One-Off Mod: Experience a special one-off mod that offers a unique twist on the classic Friday Night Funkin' gameplay mechanics. With its blend of Undertale-inspired aesthetics and catchy tunes, FNF: Underground Funk – Backbone offers a fresh and exciting experience for players looking to dive into the world of rhythm games.

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Music GameFNF MOD

Disscuss FNF: Underground Funk – Backbone

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