Nurikabe Islands

A little logic. A quiet escape.

Turn numbers into islands in this Japanese logic puzzle. Start with a small grid, follow the clues, and discover where every island ends and the sea begins.

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How to Play

  • 1
    Build each island from cells joined along their edges. It must contain exactly one number and that many cells, including the numbered cell.
  • 2
    Keep islands separate: they cannot share an edge, but they can touch diagonally.
  • 3
    Fill the remaining cells with sea. All sea cells must connect along their edges into one continuous area.
  • 4
    Leave no 2×2 square filled entirely with sea.

Find Your Next Puzzle Break

180 Puzzles to Explore

Start small with 5×5 grids, then stretch your skills on 8×10 and 10×15 boards. Extra puzzle packs await in the shop.

Daily Challenge

Make a little time for logic with three fresh puzzles each day. Solve all three to keep your daily streak growing.

Make It Your Own

Choose a color theme in Settings and settle into a puzzle space that feels like yours.

Achievements & Leaderboards

Celebrate your solving milestones with achievements, or see how your daily results compare with other players.

Play Offline, at Your Pace

Take the core puzzles wherever you go. Progress saves automatically on your device, so you can pick up where you left off.

Free to Play

Download for free and start solving. Optional rewarded ads offer hints and level unlocks, with extra puzzle packs available to buy.