Friday Night Funkin is an open source rhythm game first released for Ludum Dare in 2020, built around rap battles against cartoon opponents. Its snappy stage effects and transitions were quickly clipped by fans and shared on soundboards and in video edits. The lights shutting on cue fits that style, a short stage style cue that works outside the game as a general reveal sound. As FNF edits spread across YouTube and TikTok, brief effects like this became shorthand for power returning or a scene restarting.