About Island Builder
Chart an archipelago: shade the sea so every numbered island has exactly that many cells, the sea flows as one channel and never pools into a 2×2 block. Generated puzzles plus a set of larger classic grids.
How to play Island Builder. Tap a cell for sea, again for an island dot, again to clear. Each island has one number equal to its size, the sea is connected, and no 2×2 sea pools.
Tags: islands, shading, logic, grid
