Lumines Remastered is the absolute epitome of this, combining audio and visuals superbly to create a delightful flow state simulator. I've been playing the trial version for a while now, and I'm itching to get back to it. And that might get boring if Lumines Remastered didn't switch everything up when it starts to become overly familiar. I had the same worry, particularly when Lumines Remastered itself recommends using a controller. The music and gameplay are fantastic, beautifully synced in a way that's not all that common, especially on mobile.