Color Sort

How to play: tap a tube to pick it up — it lifts up — then tap another tube to pour. All consecutive layers of the same colour pour at once. You can only pour into an empty tube, or onto the same colour, and only if there is room. Each tube holds 4 layers. Win when every tube is empty or full of a single colour. On a phone you can also add it to your home screen from your browser's share menu. Once loaded, it works offline too.