Color Hoop Stack is 3D sorting puzzle game. Sorting the 3D ring in stack with same color ring. Sorting colorful hoops and improve your strategic skills. Color Hoop Stack, 3D Puzzle Game, Sorting Puzzle, Color Matching, Brain Training, Strategy Game, HTML5, Puzzle Game, Mobile Game, Kids Game, Color Game, Cognitive Skills, Spatial Reasoning, Hand-Eye Coordination, Problem Solving, Adventure game, Boys games, Girls games, Educational game