Underwater Bubble Shooter is a free-to-play bubble popping game developed by Awesome Apps for Android devices. With 150 levels to conquer, this game is sure to provide hours of entertainment. The gameplay is simple - tap the screen when the crosshair arrow is pointed at a bubble to pop it. There is no specific order to follow, so players need to figure out the best way to pop all the bubbles on the screen. The score is dependent on the time left after completing a level, and better scores earn more level stars. These stars can be used to gain upgrade points, which can be used to get more bullets, more time per level, and slow down the rotation of the crosshair arrow.