Island and sea puzzle

Islands: free island and sea puzzle online

Each island has one number, which tells you how many cells it contains. Islands never share an edge. Shade one connected sea with no 2x2 blocks.

Play Islands Read rules Learn strategy

No account needed. For today's shared board, open the Daily Challenge.

Start here

Begin with 1-clues. They are complete islands, so every cell that shares an edge with them is sea. If three cells in a 2x2 block are sea, the fourth must be land.

RulesLearn island size, separation, and sea rules. StrategyGrow numbered islands while keeping the sea connected.

How a turn works

Tap a cell to shade sea, or mark it as land. Grow each island to its number. Keep the sea in one group, with no 2x2 sea block.

Difficulty

We aim for each board to fit one sitting. Easy is shorter. Hard takes longer. If you want more, start another puzzle.

EasyMore size-1 islands and clear sea marks.

StandardIsland growth and sea connections interact more often.

HardLarger islands leave narrow routes for the sea.