Color Flow

Color Flow is a tube-sorting puzzle built from stacked layers of color. Tap one tube to select it, then tap a destination: the target must be empty or show the same color on top, and it must have enough room. A legal move pours the largest connected group of the source's top color that will fit, so one thoughtful move can shift several layers at once.

A level is solved when every non-empty tube is full of just one color. Undo reverses the previous pour, Restart restores the original layout, and Hint points toward a useful next move when the arrangement gets tangled. The campaign tracks your best move count on every level and awards three stars for finishing at or under par, turning a clean solution into something worth replaying.