The FNF B-Side Mod (Friday Night Funkin' B-Side Mod) is a popular fan-made modification of the original rhythm game Friday Night Funkin' (FNF). In the mod, all of the songs from the base game are remixed, featuring new beats, instrumentals, and vocals. The remixes typically increase the difficulty of the original tracks, offering a fresh and challenging experience for players familiar with the base game.

In addition to the musical remixes, the B-Side Mod also changes the visual style of the characters, providing new color palettes for each character and some redesigned animations. These updates give the mod a unique look and feel while maintaining the essence of Friday Night Funkin'.

Key features of the FNF B-Side Mod include:

• Remixed music: Each week in the game has a remixed version of the original songs.

• Character re-skins: All the main characters receive alternate color palettes or visual changes.

• Increased difficulty: The remixes often introduce more complex patterns, making the game more challenging.