Nurikabe
Carve numbered islands from a sea of walls · the sea is one connected pool with no 2×2 block. A classic island logic puzzle
About Nurikabe
Nurikabe is an island-carving logic puzzle · each number is an island of that many cells, and everything else is one connected sea of walls with no solid 2×2 block.
How a round works. Shade cells as sea or leave them as island. Each number marks an island of exactly that size, islands never touch side by side, and the sea stays one connected region without any 2×2 wall block.
Part of Logic Puzzles. Nurikabe is both its own game and a tab inside the Logic Puzzles hub, so you can play it on its own or alongside the related games.
Still in beta. Nurikabe was just broken out into its own game, so you will find it in the Beta section of the library while its standalone landing is finished.
Part of PlayMemorize, a passion project from Christoffer De Geer. It runs entirely in your browser.
FAQ
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What does Nurikabe train?
Nurikabe trains connectivity reasoning and region counting · balancing island sizes against a single connected wall network. -
How do I play Nurikabe?
Shade cells as sea or leave them as island. Each number marks an island of exactly that size, islands never touch side by side, and the sea stays one connected region without any 2×2 wall block. -
How is Nurikabe related to Logic Puzzles?
Nurikabe is one of the games inside the Logic Puzzles hub. It also stands on its own here, with the hub still able to play it. -
Can MemPi help me study and practice this game?
Yes! Click MemPi in the header or on the game board to summon him. He observes the board, thinks out loud, and can demonstrate moves or guide you through tricky steps.