Stack Up: Ring Sort

Stack Up! is a calm and addictive ring sorting game. Stack rings of the same color on the pegs; when a slot fills with 8 matching rings they merge into a higher number. Reach targets from 1 to 100, unlock new slots and collect ring styles: donuts, jewel rings, lifebuoys, hex nuts, pizzas and buttons. Shuffle, Undo and Hint boosters help when you get stuck. Play with one hand, and you can play offline too.