OCEAN

Goal: Make all BLUE (OCEAN) squares form one single connected shape.

Connected means each blue square touches another blue square on a side (up, down, left, or right). Diagonals don’t count.

Your move: Click any square to toggle that square and its 8 neighbors (the full 3×3 around it) between YELLOW (sand) and BLUE (ocean).

The 3×3 you changed briefly glows so you can see exactly what flipped.