Color Stack it 3d - donut sort

About Game
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Donut Hoop Stack Puzzle is 3D color sorting puzzle game.
1600+ levels.
Sorting the 3D ring in stack with same color ring.

How to play ?
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Pick a hoop and put on stack which contain same color ring on the top, or empty tube.
Each stack contain Maximum 3, 4, 5 or 6 hoops.
When all the hoops match with same color level done perfectly.
You can also undo your last move.

Features
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Your strategic power will be improved.
Easy to play, Hard the master.
No time limits.
Qualitative Animation, Graphics and Sounds.
Simple & User friendly controls.
Good effects & particles.