In Hoop Stack, your primary objective is to stack colorful hoops onto a central pole with perfect precision. Each color sort hoop needs to be placed carefully to ensure it fits correctly on top of the previous one. Hoop Stack, puzzle game, 3D puzzle, color sorting, precision game, spatial reasoning, mind-bending, addictive, online puzzle, free puzzle, mobile game, desktop game, kids puzzle, adults puzzle, best puzzle game, stress relief, brain exercise, color puzzles, hoop game