Sprunki is a fan-made music-mixing game inspired by Incredibox, where players build tracks with cute, colorful characters. Its horror mod became a viral favorite because those same characters, including the pink Pinki, suddenly turn dark and monstrous with loud jumpscares. Clips of the scares spread through gameplay videos, reaction compilations and short-form memes, where the contrast between the cheerful art style and the violent audio makes the shock funnier and more shareable.