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FNF vs Sans (Fallen Star) Mod

FNF vs Sans (Fallen Star) Mod

Game Mechanics

FNF vs Sans (Fallen Star) Mod is a popular modification (mod) for the rhythm game Friday Night Funkin' (FNF), featuring a crossover between the main character, Boyfriend, and Sans from the game Undertale. This mod introduces new songs, characters, and mechanics, providing players with a unique and challenging experience. 

Rhythm-Based Gameplay

  1. Dialogue and Beats: The gameplay revolves around rap battles between Boyfriend and Sans. Each rap battle features dialogue bubbles with lyrics that correspond to the rhythm of the music.

  2. Beat Markers: Beat markers appear on the screen, indicating the timing of each note or beat in the song. Players must press corresponding arrow keys on their keyboard in time with the beat markers to match the rhythm.

  3. Scoring: Successfully hitting the arrow keys on time earns points, while missing beats results in lower scores. The goal is to achieve a higher score than Sans to win the rap battle.


  1. Character Selection: Players can choose their preferred character skins and customization options for Boyfriend.

  2. Difficulty Settings: The mod may offer different difficulty settings to cater to players of varying skill levels. Players can adjust these settings to suit their preferences and challenge themselves accordingly.



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