Hoop Sort Fever

Hoop Sort Fever is a ring stacking puzzle. Coloured hoops sit on poles, mixed together, and you move them from one stack to another until each colour has been gathered. The developer presents it as a change from the water droplets used by most colour sorting games.

The placement rule is short. A hoop can go onto a hoop of the same colour, or onto an empty pole, and nowhere else. You can move a hoop by tapping it or by dragging it, whichever you prefer. Three options are there for levels that will not come together: undo takes back a move, add pole gives you an extra pole to use, and skip level lets you leave a level behind and carry on. A level is complete once all the hoops are sorted by colour.

Tap a hoop, or drag it, to move it onto another stack. It can only land on a hoop of matching colour or on an empty pole. Keep moving hoops until every colour has been sorted together. If a level stalls, use undo, add a pole or skip the level and go on.

An empty pole takes any colour, which makes it the most useful space on the board, so try not to fill one without a reason. Undo is the gentlest fix for a wrong move. The add pole option gives you a fresh empty pole when every stack is blocked.

A hoop sorting puzzle on poles. The poles stand in a portrait frame. Moves can be made by tapping or dragging. The developer lists undo, add pole and skip level as options but gives no level count.

Color Hoop: Sort Puzzle also moves hoops, onto pillars where the top colour matches and there is room. Slinky Sort Puzzle uses slinky rings with a same-colour rule and drag and drop moves.