You can control the launcher's direction to clear the screen by shooting colorful bubbles before they reach the bottom of the floor. You must shoot balls of superheroes each with its protagonist to eliminate them. You can advance to next level after you getting rid of all balls. Or you need to shoot bubbles with the desire to group balls of the same color; these will burst when they form groups of three or more of the same color.
Bubble Games are games that allowing users to shoot all colorful bubbles or put bubble with same color into same level for free. Most of them are 3D bubble games, but still, there are some 2D games. All of them are online for free, you do not need to down and install them.