Sprunki began as a fan-made mod of the music mixing game Incredibox, first shared on Scratch in 2024 before spreading to browser game sites and YouTube. Its cast of cartoon singers each contribute a beat, effect, melody or vocal layer, and Sky is one of the melody characters recognised by his light sound and sky-blue design. Sprunkr is one of several later fan variants that remix the original characters and loops. Clips of individual character sounds are widely shared so players can isolate, loop and reuse them in edits.