Instructions:

• Use left and right arrow keys to move the cannon
• Press spacebar to shoot the ball
• You have 120 seconds to shoot down all the bubbles
• New rows of bubbles generate every 30 seconds
• Chain popping will pop clusters of at least 3 bubbles of the same color, as well as any floating bubbles

Demo:

Play the demo here https://owang1.github.io/bubble_shooter/