What is "astropop"

AstroPop is a real-time computer puzzle game developed and published by PopCap Games. Players can play the Macromedia Flash version online for free at several different websites, or a deluxe version can be downloaded and unlocked for a fee. The game can also be found on both the Xbox and Xbox 360 versions of the Xbox Live Arcade. The game has also been ported to cell phones, although the controls are simplified and one of the characters (Vixx) has been omitted.