Plain description states that gravity keeps the game moving forward. The bubbles shoot out in a straight line from the cannon and i notice the color matching is the main mechanic to clear the board.
Step to click the mouse to aim and shoot, the bubbles bounce around.
The main button is the left mouse click to control the game. The bubbles pop when you match them and the popping sound is a feature.
Most tips require watching the bubble bounce path first to aim. The main mechanic is matching colors to make them pop.
Q: What are the controls? A: The main button is the left mouse click.
Q: What is the objective? A: Clear the board by popping groups of the same color.
Q: Is there a timer? A: Not stated.
Q: What is the main mechanic? A: Color matching is the main mechanic.