Hoop Sort Puzzle: Color Ring Stack Sorting Game is a free puzzle game developed by Sonatgame for Android devices. It is a challenging and addictive color-matching puzzle game that requires skills, focus, and strategy to solve the puzzles. The game consists of sorting the color rings and putting them in the stack until all the same colored rings are in the same stack. The game may sound easy, but it requires a lot of brainpower to solve the puzzles. The game offers hundreds of challenging levels to keep the players entertained for hours. It is easy to play with just one finger control. The game is suitable for all ages and can be played offline without any penalties or time limits.