Yes. There's actually a game that uses "Zen Training," as its hook. And the UK's PocketGamer has reviewed it. Here's an excerpt: "As colours flash and stones plummet, you begin to wonder why anyone would set such a frenetic game in a place normally associated with sombre, even-keeled mystics edging ever-closer to enlightenment. [...] Ultimately, Zen Training is a satisfying low-investment game to whittle away a few idle moments on in the course of your day." Check out the rest of PocketGamer's review here.