While it's 1:20am as I'm typing this, playing this helped me a bit to relax when I felt a bit of anxiety forming (not, like, bad anxiety like I've been having today; just like little thoughts of worry).
It's a very nice game. I wish there was a proper term for these kinds of games. It's similar to those old "anger relief" games that either function like stress balls or something more calming, like this.