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Play Islands (Nurikabe) online: rules and tips

Previously: Nurikabe

Flood the board, leaving one island per number. Explore the rules below, then practise Islands in the HubbardGames Library.

An account is needed to play and save your progress.

Flood the board, leaving one island per number.

How to play Islands

  • Each number is an island of exactly that many cells, and holds only that one number.
  • Islands never touch each other side by side.
  • Everything else is water, and all the water must join up.
  • The water may never form a solid two by two block.

Your first useful move

Separate different numbered islands before expanding them. Check narrow channels carefully: the sea must remain connected and cannot contain a solid 2×2 block.

Playing on HubbardGames

Open a Library board to find this game’s controls. The how-to-play button keeps the rules close by while you solve, so you can check a detail without leaving the puzzle.

Choose your difficulty

The Library shows the available difficulty levels for this game. Choose a board that suits you, then return for another when you want more practice.

Can I practise without affecting the league?

Yes. Choose a puzzle from the Library to practise this game. Library practice does not add league points. You can return to an unfinished puzzle later.

Find your next favourite

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