AE Bubble is a Puzzle Bobble-style game for Windows Phone. In other words, you have to shoot colored balls to form chains of 3 or more balls of the same color.
The game has two modes - endless and classic - and adds a twist by offering weapons and power-ups. Other than that, however, AE Bubble doesn't really revolutionize the genre.
Even so, it's a solid, smooth game that looks good and plays well - if you're bored and you've got your phone handy, you won't regret picking it up.