NOT KNOWN FACTUAL STATEMENTS ABOUT HAPPY COLOR SORT GAME APP

Initial grievance- a lot of adverts, but at least you may skip rapidly. Second grievance- desires a rules section; I believed the game was glitching when it wouldn't let me set down a ball on another and would pick up the other ball in its place, but through trial and mistake uncovered that it's simply because you can't stack various colors (i.e. i