Music of the Spheres is a puzzle-shooter about bouncing bullets, Islamic art, and sound. In it you can fire bullets which bounce, and when they bounce, a specific glockenspiel note is played.
That simple premise gives rise to a lot of strategies, and the levels are designed to bring those strategies out. The way they do that is more “puzzle” than “shooter” - the game does not require many reflexes or risks. It just requires thoughtfulness and precision. It is intended express things concisely, and wordlessly - you do not have to be able to speak any language in order to play this game.
“There’s a beauty in the apparent simplicity of the design, which like much that is contemplative is far more complex than it first appears. It’s somehow reassuring to play a puzzle game that is entirely disinclined to frustrate, hoping to create mindful, soothing spaces instead.” ~Adam Smith, Rockpapershotgun