Ballus is a small and simple puzzle game where you have to match pair of balls by their colors.
The game board has an even number of colored balls, where exactly two balls share each color. These balls are arranged in one inner and one outer ring. When you start a level, the balls are randomly scrambled. Using different tools, your task is to arrange every ball so that each one in the inner ring has the same color as its corresponding partner in the outer ring.