Friday Night Funkin Vs. Sans(Undertale)

Sneak into the dark Dungeon for Friday Night Funkin' Vs. Sans (Undertale) and face the most laid‑back skeleton singer in the underground. Sans already knows about Boyfriend's win streak and calls him out for a direct mic clash in the world of Undertale. The whole underworld crowds around this rap battle, waiting to see if a human singer can handle a mystical stage under glowing bones and spooky halls.

Sans does not rely on punches or blasters here. He answers every beat with tricky rhythms that keep the duel tense from the very first track. Boyfriend has to keep his cool in front of this grinning opponent, because a single miss can flip the vibe of the song completely.

How to play?

Watch the arrow notes rise on your side of the screen and hit the matching keys right as they overlap the targets. Keep the combo bar steady by landing clean, on‑time inputs during each Friday Night Funkin song. New tracks in this FNF mod introduce faster patterns, making the chart feel tighter and more demanding with every round. Stay focused on the full sequence instead of single taps, and keep a steady rhythm through the whole verse to survive Sans' pressure. Finish the last note strings without dropping the gauge, and the Sans vs Boyfriend duel ends with the skeleton conceding the stage to your performance.