You can choose from multiple game modes from classic to endless. To start the game, pick the level you want to start in. Level 1 is the easiest. Aim and shoot the bubbles with the arrow below. Try to clear all the colors with the same balls. Minimum of 3 needs to be touching in order for it to pop.
Clear all the bubbles before it reaches to the bottom. If you can clear all the bubbles before reaching the floor, you’ll move on to the next level.