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RULES & PRACTICE

How to Play Nurikabe

Play Nurikabe ↗

Game guide · ZGHEHE

How to play Nurikabe

Try Nurikabe at your own pace and keep its objective in view. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Look at what changes after your first action. Read the objective before making your first input. Keep the game area visible while you use its controls.

Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.

An idea for your next attempt

Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Keep the objective visible.

What you are aiming for

Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Keep that objective in view throughout the round. Follow this game’s rules rather than another version’s.

How to proceed

  1. Shade sea squares and leave islands white.
  2. Every island contains exactly one clue.
  3. Different islands cannot meet along an edge.
  4. Check puzzle verifies sizes, connectivity and forbidden sea blocks.

Input guidance

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Read a button’s label before selecting it. Avoid pressing the same control repeatedly while a move is being processed.

See how the rules apply

An island labelled 1 is already complete, so its edge neighbours must be sea. Compare this with the rule that governs the move. Consider the next action carefully.

One detail worth checking

Two numbered islands may not merge into one. Take a moment to reassess the position before continuing. When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round.

Questions about this game

When I return, what is the goal of Nurikabe?

Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.

Before I begin, how do I control Nurikabe?

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

When I return, what example helps explain Nurikabe?

For clarity: An island labelled 1 is already complete, so its edge neighbours must be sea.

While reading the Guide, what should I watch out for in Nurikabe?

Two numbered islands may not merge into one.

When I return, what format does Nurikabe offer?

Keep this in mind: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.

When I return, which play mode does Nurikabe use?

The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

While learning, where should I start with Nurikabe?

Keep this in mind: Shade sea squares and leave islands white.

Do I need an account or a payment for Nurikabe?

The key detail is this: No player account or payment is needed. Game scores are recreational results, not cash prizes.

For my first round, how can I find Nurikabe again?

Keep this in mind: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

As a new player, how do I report an issue with Nurikabe?

Here is the relevant explanation: Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.

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