Hi,
This isn't much of a game, but it still belongs here. Because it's interactive and uses many features of PHASER features i think it's ok to post. (a big fat "thank you" at phaser, by the way ).
As a (more a less) finished generative arts project it has a playful feel to it. The app creates a never ending stream of rhythmically moving ornaments. Taping ENTER or Clicking to the beat of a song will align the movements to that beat.
http://www.aleatoric.de/ColorSounds/