Bubbles Storm

You are attacked by waves of bubbles, and your task is to prevent them from reaching the bottom of the screen. There are 4 types of bubbles, each with different amounts of health, ranging from 1 to 4 HP. Every 100 meters, their level increases by 1 unit, making them stronger. The bubbles also drop some gems, which serve as the game currency. The stronger the bubble, the more gems it will drop. In the future, you can upgrade your canon in the shop to become more powerful and withstand tougher fruit enemies.