Hollo Ball is a really fun and simple game where your task is to make path for a running character to reach the finish line by removing the obstacles using a hole. The levels are pretty much similar, and you can complete them just by using the friendly and intuitive controls. You can move this hole from one location to another on the platform just by swiping your finger on the screen of your tablet or smartphone.
A positive aspect is the ability to play this game as much as you want. You can literally pass the mark of one thousand levels. Some people don't like the advertisements showing up too often, but the game is free, and it has to be supported in a way after all. Other than that there's not much left to say, the visuals are pretty simple in my opinion.