Donut Sort Fun

Donut Sort Fun is a free and online game of donuts stacking and sorting for boys. Donuts with different colors are strung on cylinders. You have to sort these donuts according to their colors, change the order of them, and finally put the donuts with the same color together through repeated conversion operations. The game will be simpler at the beginning, but it will become more and more difficult later. Come and exercise your logical thinking!