Hit the beat of challenging notes in a dark musical arena in the atmospheric fan-made rhythm mod FNF Nocturnal Protocol. You will have to engage in an intense vocal duel with the Guardian, performing the famous one-track composition. Click the arrows in FNF Nocturnal Protocol to accurately replicate the heavy soundtrack from the Slendytubbies horror series and get game points. For flawless performance of vocal parts, maintaining a high tempo and successfully surviving in an eerie visual atmosphere, you are awarded bonuses. Good reaction speed will help you react in time to suddenly accelerating notes. An impeccable sense of rhythm will allow you to effectively defeat the monster in this musical battle.
