Bubble Fight IO turns the classic bubble shooter into a duel. Instead of clearing a wall of bubbles alone, you face another player online. The bubbles are stacked together in the middle of the arena, and both of you are shooting at the same pile.
Players take turns firing a coloured bubble into the stack. Hit a group of the same colour to pop it, and any bubbles that lose their connection fall away as well. Every bubble you bring down deals damage to your opponent, so the bigger the drop, the bigger the hit. Reduce your rival's health to zero before they do the same to you.