Lunavia

It's a "water-stamp coloring" puzzle. Players first select one of four water-stripe seals at the bottom, then tap a grid cell on the pool surface to stamp it. Each seal affects the color state of surrounding cells in a different pattern, and the small icon in the upper-right corner of each cell shows the target color. The goal is to make every cell on the board match its target icon within a limited number of moves. Later levels expand the board, introduce un-stampable water-stone cells, and tighten the move limit, demanding careful planning of stamp selection and placement.