Bubble Shooter are games that are used to pass the time in a really nice way. You must actually combine balls or colored balls in order to remove them and to score points.
You should generally align at least 3 balls of the same color to make them disappear, but sometimes this number changes to 4 or more.
It also happens that instead of colored balls you have animals or monsters, or sometimes the window starts to move which adds difficulty to the Bubble Shooter game!