Bubble Pop Battle is, as the name suggests, yet another in the increasingly-long line of bubble shooters on Facebook. This time around, as well as popping groups of three or more like-colored bubbles by shooting additional ones up the screen, players compete in a head-to-head battle in an attempt to score more “KOs” than their opponent. A KO is achieved by causing the opponent’s screen to fill up with bubbles past the bottom line, at which point their screen is cleared and they can attempt to catch up.

Additional lines of bubbles are dropped onto one's opponent by matching large groups of bubbles and causing bubbles that are no longer attached to the top of the screen to fall. Incoming attacks are represented by a meter in the center of the screen, though this may be depleted and attacks protected against for as long as the defender continues to match additional groups of bubbles.