A nice little mobile phone time waster. I think your juice and gamefeel is really on the spot here, each sfx and screen effect really work together to elevate the experience. I must say I believe the concept would be greatly elevated by a progression system. You could have a choice of upgrades every once in awhile, things like, increase ball orbit speed, increase firing bar window length, area of effect arc of damage emitting from the ball when firing, autofiring turrets, freeze bombs, two balls, radar warning of incoming comets, etc etc, while stacking on more color rings until it becomes beautiful chaos. Nice entry, I enjoyed playing it.