Anyways, the goal of the game is to bring the ball from the start line through the whole level to the end. Times to finish one level is measured and saved, so all levels can be later replayed. There is a total of 40 levels divided into 5 zones. Some players find this game hard, but it's also not the point to solve the whole game in 15 minutes . All 40 levels can be solved in ca. 4-5 hours. There was also a plan to make a level editor and to add custom levels into the game, but there was no time this feature, because I was busy with other projects.
You can install it from Google Play for free and there you can also see screenshots (I couldn't upload them here because new users are not allowed to post urls to external sites).