Color Hoop: Sort Puzzle

Color Hoop: Sort Puzzle swaps tubes of water for coloured hoops stacked on pillars. The goal is to rearrange them so the colours end up sorted, and the developer mentions many kinds of hoop to deal with.

Movement follows two conditions. A hoop can go from one pillar to another only when the top hoop on both pillars is the same colour, and only when the receiving pillar has space for it. Each hoop is a solid piece that you select and then send somewhere, so a crowded pillar simply refuses another one. Beyond those rules the developer says very little: there is no level count, no mention of a timer and no list of helpers or boosters. What you get is the core ring sorting idea on its own, drawn for a tall portrait screen.

Start by tapping the hoop you want to move. Next, tap the pillar you want it to go to. The move is made if that pillar's top hoop is the same colour and the pillar has enough room left. If the move is not allowed, try another pillar. Keep shifting hoops until each colour is sorted together.

Two things have to be true for any move, a matching colour on top and free space, so check both before you tap. A pillar that is nearly full has little room to accept anything; moving a hoop off it first can give you somewhere to put the next one.

A hoop and pillar sorting puzzle with two movement rules. The pillars stand in a tall portrait frame. The developer's instructions describe tapping only. No level count, timer or booster is mentioned by the developer.

Hoop Sort Fever stacks hoops on poles too, and adds undo, an extra pole and a level skip. Slinky Sort Puzzle uses springy slinky rings that can only go onto a ring of the same colour.