Knock Balls apk is a simple and casual game. I didn't have any interest at all, but the game's various levels made people full of novelty and excitement, so I couldn't put it down.
The completion of the level mission can be rewarded with additional shells, and two shells can be fired at the next time, significantly increasing the fire output. When faced with a large number of densely placed tiles, do not go directly to the bottom, the effect is very bad. The shells can't shake their roots at all. You need to first fly the tiles on the top, and after about half of them, it will be effective to hit the bottom.