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SBBEN

RULES & PRACTICE

How to Play Nurikabe

Play Nurikabe ↗

Game guide · SBBEN

Your guide to Nurikabe

Take a moment with Nurikabe before moving to another game. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Choose a clear next step rather than rushing through the instructions. 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.

Bring this focus to a round

Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow. Make the next step deliberately.

Your goal

Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Use the instructions to see which actions move you towards it. Follow this game’s rules rather than another version’s.

From the start of a round

  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.

How your actions work

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. Use the visible help when you are unsure of the next input.

Try this example

An island labelled 1 is already complete, so its edge neighbours must be sea. Use the example as a guide rather than a substitute for reading your board. Choose a deliberate next step.

Keep this in mind

Two numbered islands may not merge into one. Take a moment to reassess the position before continuing. Read one step at a time and try it on the playing area. Match the instruction to the control you use.

Game-specific help

While reading the Guide, what is the goal of Nurikabe?

Here is the relevant explanation: Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.

While learning, how do I control Nurikabe?

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

While learning, what example helps explain Nurikabe?

Here is the relevant explanation: An island labelled 1 is already complete, so its edge neighbours must be sea.

While learning, what should I watch out for in Nurikabe?

Here is the relevant explanation: Two numbered islands may not merge into one.

What format does Nurikabe offer?

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

Before I begin, which play mode does Nurikabe use?

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

For a quick reminder, where should I start with Nurikabe?

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

When I return, do I need an account or a payment for Nurikabe?

Here is the relevant explanation: No player account or payment is needed. Game scores are recreational results, not cash prizes.

For this browser game, how can I find Nurikabe again?

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

For my first round, 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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