Sprunki is a music-making game built on the Incredibox idea: a row of characters, each carrying a sound — a bassline, a beat, a vocal hook, an effect — and a stage you drag them onto. Every character you add layers its sound onto the mix, in time, automatically. You cannot make it sound bad.
That's the whole appeal. There's no notation, no timing to get right, and no way to fail — you're arranging rather than performing. Certain combinations unlock animated bonus sequences, which is the closest the game gets to a goal.
A drag-and-drop music game where each character carries a loop — beat, bass, melody or effect — and dropping them onto the stage layers those loops into a track automatically in time.
It's built on the same idea — characters as sound layers you arrange by dragging — with its own characters, sounds and visual style. Incredibox is the original commercial game.
Certain specific combinations of characters trigger them. Experimenting with different groupings is how you find them; there's no penalty for trying.